Well my daughter is 1. Since her birth i had a period about 3 times between 36-37 days. Anywho on feb 1st i had my last period. Took a test in march and came out positive. Based on my 1st last period im due november 8th. I did my first ultrasound april 8th suppost to be 9 weeks 3 days but the baby was measuring 7 weeks 3 days. 2 weeks behind. So the doctor pushed my due date to nov 22. Any reason for that or did i just ovulate a bit later then when i should have. Pease help