Sex while preggo

Mari • My 3 Little Angels | Mommy Loves You 👼🏽Nayeli 09.14 💜
When is it ok to have sex while your pregnant because I'm 6 weeks and I'm getting married in the next two weeks and I know my fiancé is gonna wanna have sex on the honeymoon but I'm scared to because of the fetus ??!?! Help