My hands fall asleep during sex

My boyfriend and I have been a little more sexually active recently. I'm still a virgin but he has gone down on me and fingered me. We are also in a long distance relationship and we kianda gave plans to have actual sex next time he comes visit, most likely around my birthday, birthday sex🤔. Anyways the past two times that he has gone down on me including this past weekend my hands start to fall asleep. From my fingertips to my wrists. I get very irritated bc it distracts me from enjoying myself and it doesn't allow me to orgasm. Last weekend I ended up crying bc I felt like a failure. I felt bad bc it wasn't his fault that I couldn't orgasm and I didn't wanted him to feel like that about me. But we talked about it and his sweetheart ass made me feel better and cuddle me trying to make me smile. I love this man. Then I suggested that maybe we could try different positions, maybe one were I'm on my hands so that the blood would flow differently. I don't know. But we later on ended up with me laying on my stomach and him on top of me. He was fingering and kissing my back and neck. And I start to stimulate my clit. It too m a while but I did orgasms. My hands fell asleep again but maybe about a 3 from 10.

Someone know what is causing this or knows how I can make it stop.

Pls help a girl get orgasms lol

Edit: Okay so yes I was diagnosed with almost having anemia a couple months ago. I got medicine to take daily and I recently just finished my prescription. I don't know if I still need it but I guess I'll have to talk to my Dr. I have been eating a lot better since then and I do dance so that helps with the physical activity. Usually when I'm intimate with my bf I'm laying down and he's on my side or on top. The feeling is the same as when your foot or leg falls asleep.