I have just found out that I am pregnant but I am unsure who the father is. My first date of my last period was 19th January 2015. and my cycle varies, sometimes it's between 25 to 29 days long, other months between 45 and 58 days long. Me and my previous partner have been trying for a baby for the last 6 months but recently split up. The last date that we had sex was 26th January. Thinking that this was far too soon after my period to be pregnant me and my current partner began having sex on 6th February. I did a clear blue digital test yesterday (23rd Feb) which said I was 1 to 2 weeks pregnant, therefore I thought it was my current partners but after looking at a few conception calculators today it's looking like it may well be my ex partners. I don't want to give either false hope (both are desperate to be fathers). I there anyway you can tell me which is most likely to be the father and how certain is that?