Not pulling out while on birth control pills

So I’ve been taking Trinessa Lo pills (generic version of Ortho Tyi Cyclen which I was taking prior to this). Normally my partner and I don’t use condoms because I’m on birth control but he also always pulls out.

Recently though, he’s been asking me if he can just finish inside me instead of pulling out, but I’m a little paranoid.

I was wondering if anyone else has also had this experience or advice on if it’s safe to not pull out while on birth control? I wouldn’t do it if I was ovulating but I’m not sure if that even makes a difference

I know birth control pills aren’t 100% pregnancy proof, but I’m not sure I’m just being dumb here or overly paranoid.