He doesn't want to have sex (anymore)!

I'm currently in a six month relationship with my boyfriend - he is my first (even though I'm not his first) and we started having sex by the third month since we started dating. Its been amazing, and I felt special.

Because of corona, its been hard to see him. We probably met once per 2 week or so, yet suddenly he said that he didn't want to have sex anymore! I was feeling frustrated and sad, yet I know very well that I need to respect his boundaries.

He said that he is afraid of the consequences (pregnancy, STIs), but I have this anxiety that maybe its ME that led him to that decision, and I have no idea what to do now.

Anyone has the same experience? :(