Help! Discomfort during sex??

Hey ladies.. I have this new issue. My boyfriend and I have been together for almost 2 years now and starting a little over week ago I began to have discomfort and a bit of pain when he would go all the way into me. One night we were having great sex.. and a couple days later that discomfort started. Because of that I’ve refrained from having sex bc 1) the pain isn’t worth it and 2) I literally don’t get aroused. I get wet when he touches me but I don’t really feel anything.. same goes for sex. Like no tingling I’m turned on! sensation. Today we tried again and it was just discomfort. Someone suggested endometriosis to me.. which my grandma had but I wanted more suggestions.