I bet that OB's get ton's of phone calls from pregnant women with all kinds of ailments. How do you know when to call your doctor? It's my first pregnancy, so I always wonder if the hurt I feel is normal or not normal. Lately (31 weeks tomorrow), I've been feeling way more back pain, different than earlier in my pregnancy, and pains on my sides that come and go sporadically. Oh, and my ankles and legs have EXPLODED lately.

DH and MIL are insistent that I should call doctor, but I'm kind of dismissing as coming with territory. How often did you call your doctor's office and if you did call, how did you make that decision? (I guess other than obvious stuff like bleeding, etc.)