Plan B

I’ve been with my fiancé for about a year and a half. I recently stopped taking my birth control because my wedding dress wouldn’t zip 😬 and my bc was making me gain weight like crazy. Last night we got carried away had unprotected sex and he finished inside me. He doesn’t want me to take plan b because he wants a baby. I also want a baby very, very badly, however I want our baby to be planned and I want to be married first. Our wedding is in two months, so I’m really torn! I don’t have anyone to talk to about this

I need advice!