Sex and relationships

Me and my boyfriend are both virgins and we r planning on having sex Tmoz night however I’m really worried about getting pregnant and that’s what puts me off having sex however my boy is starting to get frustrated and I understand why we r going to use w condom and the pill out method I am not on the pill what’s the chances of getting pregnant is it low ? Shall I be worried or shall I go for it , I do really love him and trust him xx