Just because the XR version makes seizures less likely doesn't mean that you can't have them. I shouldn't worry, but I can't help it. It's possible and the idea of passing out in public is a nightmare for me
As for distinguishing between depression and anxiety, it can be really hard. They are highly co-morbid. Something like 70% of people with anxiety will experience a depressive episode in their life and 70% of those with depression will suffer bouts of anxiety.
Talking to doctors is really difficult. What makes it so hard, besides the anxiety itself, is that I don't really feel like I have any new symptoms to tell about. I don't know what is normal and what isn't. I don't really know what to say, and if I say something I make it sound like it's not a big deal. I had a traumatizing experience once and had to see a psychiatrist for evaluation. He asked why I'm here, I said because the hospital told me to, he asked if I need anything, I said "no" and left. I was not really okay, but I didn't know what else I'm supposed to say?
I would review your with your doctor what medications you are taking for anxiety.
I see my current psych about four times a year. He doesn't seem to be very concerned. The first time I mentioned anxiety he just said that it's normal to feel anxious in some situations. I said okay. It seems like they always hand out antidepressants when you say the magic words (suicide ideation). When I mentioned anxiety the second time he prescribed me Pregabalin. When I started low-dose Pregabalin it was the only time I can remember where I didn't think about dying as a coping mechanism, but it still didn't do much for my anxiety. Now we have this agreement where I can choose my medication and dose myself, under supervision. That sounds great, but due to medication anxiety I'm just sticking to a low dose, if anything at all. If I had bad side effects or physical dependence I'd hate myself and feel like it's my fault. So there's just this awkward staring contest. It's like: "What do I do?" "What do you want to do?" "I don't fucking know". Medication is terrifying, life is terrifying. And I'm going to be stuck like this for the rest of my life, trying to function like a normal human. I guess I just would be fine if I could just die because that seems to have fewer side effects and less terrifying. And that brings me back to antidepressants.