Pregnancy Timeline: Calculating Conception Date & Implantation Bleeding

Question
The first day of my last perios was Nov 18,2006. I had a positive test on Dec 16,2006. Was I pregnant before November 18? If not, the when

Answer
Hi Cassandra :)

If your last period was a normal period, and you have a normal 28 day cycle, you would have ovulated around December 2nd.

If your November period, was short, light/spotty and only lasted 2-3 days, this could have been implantation bleeding. Often, because implantation bleeding comes around the time a woman is due her period, its mistaken to be a period. This is because of the cramping associated with it. But it is indeed a pregnancy symptom.

So if your period for November was abnormal, compared to your usual periods, then its possible that you could have actually become pregnant in October/early november.

The only way to know exactly, is to have a songram done, to determine gestational age. But keep in mind, that if your period for November was a normal flowing period, that you would deem normal, then chances are you concieved somewhere in the December 2nd area.

Hope this has answered your question, and thankyou for writing!

-Kristy