I'm 5 weeks pregnant and still nursing my 14.5 month old. My sister in law over the weekend seemed very concerned that I would be nursing through pregnancy and suggested I call the doctor. So I did this morning and they recommended that I wean by 16 weeks as nursing can cause pre-term labor or miscarriage. I did quite a bit of research on my own and did not have any intent of stopping soon. I am so frustrated, did anyone else receive this same advice from their doctor?