I could have written your post right down to the type of cream you are using and your worry about the impact giving birth will have on them. I have two weeks till my due date and my MW says not to expect to get rid of them due to pressure from the baby. But I have visions of my intestines falling out as I push and it terrifies me!. Sorry I have no magic advise to offer but just wanted to sympathize with you.
Hope you find a miracle cure, Cheers Missy