I am married and have a 2 year old girl baby, I usualy have 28 day cycle with + or - 5days which i think is regular periods. I had my last period on Dec 12th, I was due to have periods on 12th of Jan and didnt have, we had intercourse on 12th Jan. I didnt have periods till now, we had intercourse again on 19th Jan and I could see that I was having a transparent discharge on 20th morning which i think is ovulation. Started to take regestrone from 21st onwards and i have taken 4 tablets so far. Is there a chance of me getting pregnant because of my contact on 19th Jan? Please help, thank you.