How to feel 😣 ranting....

So usually me and my fiancé have a great sex life... but lately he can never “finish” it makes me feel terrible or I’m not good enough.. I even try and wear nice lingerie but nope nada.. he used to always finish but now nothing.. we talked about it and he says it’s cause he knows recently I stopped using birth control (we both agreed to that) I can’t help but feel like he’s not attracted to me now 😰...