Ok.... my bf and I just had our 3rd baby via c section 5 months ago on the 27th of Feb. Well, on the 13th of Feb we had unprotected sex (he came inside me). Now, I know Dr's say that we are the most fertile the first year of having a baby. I was due for a period on the first of this month March but haven gotten it yet. Should I take a p test or is it too soon?