NuvaRing - Can he ejaculate inside after first 7 day waiting period and can I take it out during?

This is my first time using the nuvaring. I'm going to have sex in a few days but only after the 7 day waiting period. I was on the pill before. I wasn't always on time, but i took it every day. My boyfriend and I have unprotected sex but he ALWAYS pulls out and it has always been successful. But I was wondering if this time he would be able to ejaculate inside me and if my chances of pregnancy would be nonexistent? If not, is it ok to take it out during sex? Obviously we would use the pull out method if I did this. He is very large down there and I'm worried that the ring would get in the way during sex. I know the statistics say that 90% of men can't feel it, but he's different. The information paper AND the website didn't mention this. It says it's okay for the ring to be out for 3 hours but does this include during sex? I tried calling my gynecologist but his office is only open from 7am to 4pm during school hours. I need answers and if anyone can help I would be very greatful. Thank you!