Mumtobee - Thanks for your input! I have been doing a bit more than usual lately, and that could cause it too. I hadn't thought of that. To be safe I will wait till my dr appt before I worry too much!

Rose - Yeah, with my last child the doctor did the blood tests and found out that my blood type was normal and not affected by that rheuses thing of what ever it's called! And I don't think that is something that can change from pregnancy to pregnancy, is it?