Relationship problems

So back in june i had a three some with my husband and my best friend and i didnt like it but didnt say anything an i felt hurt it seemed like my husband enjoyed her more than he does me i am plus size an she is a barbie doll now that im pregnant i keep haven dreams about it but to scared to say anything it hurts me inside i should have stopped it before it all happen but i didnt now i feel like when we all hang out their always whispering when i leave the room i feel like something else is going on an i dont know what to do about it