How do you deal Anxiety?

Sa

I've struggled with anxiety my whole life but recently it's been getting a lot worse. At the same time I've gotten a lot more open with it, my boyfriend is amazing and makes me not feel like a crazy person when I talk about it. I've never opened up about it because I was always so scared of being judged for it and he doesnt judge me( not that he or anyone else should) I've noticed recently my anxiety has been very focused on him. I have to check throughout the night just to make sure his heart is beating. He has no kind of health issue. I know he's okay I know there's no reason for me to feel so much anxiety about his well being. It's at the point where I need to be up in 3 hours but I can't sleep because I feel like I need to keep making sure he's okay. I can't keep doing this, help!?!