NO!

In all caps and bolded.

What you did, while sinful, isn't really in the right ballpark of the definition of unforgivable sin. The unforgivable sin is pretty much attributing Jesus' works done through the Holy Spirit, attributing them to Satan. The unforgivable sin is saying that Jesus is not the Savior, that Jesus is demon possessed by Satan. The big reason that would be unforgivable is, Jesus is the only path to the forgiveness of sin. Jesus is the whole Foundation. There is no other way, and there is nothing in addition to Jesus. The gospel is Christ crucified. (1 Corinthians:23). If Jesus isn't the Son of God and isn't God, then there is no atonement and we die in our sins.

It's not about thinking Jesus is an insane, delusional crazy man. It's not even about not believing Jesus ever existed. It is about recognizing that Jesus has supernatural powers, and those supernatural powers are the result of demonic possession. It's not about believing in Satan -- you obviously believe Satan exists, and so does every Christian who thinks about it enough.

If Jesus is demon possessed, then we are still dead in our sins. If you believe Jesus is demon possessed of Satan, then how can that belief ever reconcile you to Jehovah? That's the essence of unforgivable sin.

Notice in Acts 2:37 how these Jews who crucified Jesus because they believed he was a blasphemer, even possessed of Satan -- they were cut to the heart it says. They repented.

Repent means they had a change of heart. It sounds like you have had a change of heart of your sin.

People who have committed the unforgivable sin don't tend to care they have done it. How could they? Why would anyone give second thought to something they have settled in their heart, one way or the other?

Here's a pretty good article on the subject of unforgivable sin.

The Bible clearly states that we are all sinners. Read 1 John, especially the first chapter. Even if we are saved, the Bible clearly says that we still may sin. The Bible clearly says that there is none of us without sin. It says to confess our sins to God. Basically, that means if you and God got into it and aren't talking right now, you go back to god and say "I'm sorry, You were right, I was wrong." Because if there is ever disagreement, God's never the one who is mistaken, you know? God's omnipotent -- He knows everything. You're not just saying "I sinned", you're saying "I sinned in Your sight, God, and I know it."

Let's go back to this: If you had committed the unforgivable sin, you wouldn't really care. So what if this isn't that "fiery expectation of judgment" but instead it is the Holy Spirit prodding you to repentance? When is the Holy Spirit not gently (or sometimes, not so gently) trying to woo us back into the light.

You listened to the Devil for a little while. But now it seems like the Holy Spirit is trying to get your attention. That's really going to make the Devil mad. The Devil doesn't just lie, he twists the truth of the Bible around for deceptive and evil purposes. He wants to convince you that you're lost. The Devil knows he's lost, but he's playing a long game of parting shots. He's going to take as many people with him as he can. Just to hurt God -- and if you really want to hurt someone, you don't go after them; you go after their children.

If the Devil convinces you that you're worthless to God, then you're not going to be out there being Christ to others, possibly leading some other lost soul to salvation, saving them from the Devil's fate. The Bible says Satan is real, he is a murderer and a liar from the beginning.

So, what will you believe? Will you believe what the Devil is trying to insinuate -- that Christ crucified isn't enough for you (which is the ultimate sin of pride)? Are you the exception to the rule -- are you above and beyond God's reach? Doesn't that sound like what Satan wanted for himself -- to be in place of and therefore above God? The Cross is for humans, not for the fallen heavenly host. There is no provision for Satan, who was in direct unadulterated contact with God and should have known better. Are you going to believe the lie that there is no provision for you either?

Or will you choose to believe that just maybe, Jesus wants you to come near to Him and stay close to Him -- He wants to do to you the exact same thing He has always done to every prodigal and backslider and sinner who turned back to Him in every story in the Bible? Will you choose to believe that if He loves you enough to die for you, that He will also love you enough to hold you tight and not let go? And if not for love of you, to maintain His own integrity and honesty? God has a huge stake in keeping His promise to you -- God's very essence depends on Him keeping His word to you. And not just His word, but His Word, with a capital W -- Jesus Christ Himself?

The Bible implores us to reason and think about it. What do you think?