Me [m25] my gf [F35] feeling anxiety with her?

Currently been dating for 2 months and everything is going perfect. The issue is im starting to feel a bit of anxiety when i think about how close we are getting or how vulnerable I'm being with her or if I'm enough for her or if I'm satisfying her. It's getting to the point where I'm feeling nervous or feeling stressed around her and i don't know why.. could it be that I'm falling for her and don't want to accept it or is this normal when people start new relationships. It's affecting me because I'm constantly stressed or feeling worried and I'm not even having the feeling to have sex since my stress is so high