After sex

My anxiety is through the roof right now and I know why, but also it's pulling in on my depression which until a week ago I was making tremendous leaps forward with. I won't disclose what happened here because this is about something else. I have been seeing my boyfriend for a few months and he's absolutely amazing, I know it's really soon but we click. He takes care of me during attacks and doesn't bombard me with questions I don't have answers too. he gets it. and the Sex. mmmm. yes. but my issue now is, with all my anxiety building up lately and the darkness really seeping in, I've been getting overly emotional and just inconsolably sad after we have Sex. seriously the best Sex I've ever had. and I can't bask in the after glow. what's wrong with me?