Fiona, I know exactly what you are going through!!! Pregnant (although I didn't have the pelvic thing) with a "not so nice" 16 year old. All I can say is hang in there babe and offer you a and a shoulder. I think it is very, very hard for people who have not had to raise a teenager to understand your situation and how fragile the relationship with a teen can be. If you ever want to chat please feel free to PM me.

ETA: I also want to add that I didn't trust my teen DD to babysit, so I know where you're coming from. Oh, and now she's UTD, so she could have used the practice, lol