Can a Dr. tell if I m one month pregnant or two when i go for my first visit? On April 5th I had a slip up and i ended up taking the Plan B pill within 3 days. I got my period on April 17th, it was a little early, but it was a normal period, normal cramps. Then on April 30th it happened again, only this time i did not take the Plan B pill. Yesterday, May 21st I took a pregnancy test because i did not get my period and it came back positive.Is this pregnancy definitely from the most recent incident? Or is it possible that it was from the fist incident even though i took the plan B Pill and got my period? Will my Dr. be able to tell if I m one month or two by testing my Hormone levels? Please help!