Woke up this morning and it feel like my pelvic bone keep popping when I move it's not painful it do feel funny and the pop noise is pretty loud my Fiance wants to go Er but i don't know I never had this happen with any of my other babies...... is it because im caring twins? Any Suggestions

Happy Mother's Day All Mommy's I'm new to the group and me and my Fiance are expecting TWINS!!! This will be our baby 4&5 we already have 3boys so I'm very nervous and still kinda in SHOCK!!!
I'm 12weeks 5 days today!!! Our Family knows I'm pregnant but don't know it's twins so I'm hoping I can make some mommy friends I can talk to it's hard keeping everything in.