I have this every single month, the best thing you can do is talk about it with the person you're getting anxious around. It helps so much to just get it out there and prevents further rumination. I personally believe that the hormones turn me off of him due to some weird biological wiring. When I'm going through it I just say " I feel awful, my hormones are making me feel shit again " and a big hug and understanding goes a long way.

I have a very high sex drive normally, am in love with my partner and find him very attractive but during the anxious episodes I start to hate him, see him as more of a friend and mistrust him e.t.c. This happens out of nowhere, then I get the period and like that all the anxious emotions just vanish. If I'm feeling particularly awful I can almost guarantee I will have some spotting or a bleed the next day.