Birth control help

Hi ladies!

I’m taking the pill for the first time to help with my period, and an obvious benefit is contraception but my primary focus was to help my period.

But recently my boyfriend and I have tried having sex but my ~kitty~ is just so so tight and even trying to have sex really hurts or is uncomfortable, depending on the position. I don’t have any signs of endo, as I’ve been to a dr.

We recently tried having sex and he was in about halfway, unprotected

I’m curious, how likely is it I would get pregnant from precum, if he did so inside me?

I’ve been on the pill for 2 1/2 months, and I’m concerned about having unprotected sex, using the pullout method. Is it just too risky? I’m pretty scheduled and very regular, 8pm every day in taking my pill

Thanks!!