So I am 4 weeks 4 days pregnant. This is my 4th pregnancy. I have a almost 18 year old daughter. My last pregnancy i miscarried in July i was due February 7th. I found out i was pregnant on the 8th. But i have known i was pregnant for at least a week before. So here is my issue my nipples hurt so bad that I can't even touch them. They have doubled in size in the last week. Why am i in so much pain my breasts don't even hurt anymore just my nipples. I'm kind of freaking out. What could be wrong with me? Thank you for your help.