My boyfriend wants me to take plan B because he is scared?!?

Sydney
So I got off the pill like 2weeks ago and everything was fine. My boyfriend and I decided not to have sex till I get back on the pill but we had sex a week after I got off the pill lol. We used condoms and we checked if they broke and the did not. So we are fine. Yesterday we had sex with a condom on and we checked if it broke and it did not break so we are fine. My boyfriend is so worried about yesterday for some reason and I told him that we both know that the condom did not break and we were being very very safe. He's just so paranoid about this and he wants me to take plan B just in case but I know that we are both fine. Also plan B is expensive so I don't really have the money to get it either and he doesn't understand that. So should I take it just in case or would it be a waste?