Recently I have found out that I'm now 5 weeks and 5 days pregnant. Don't think bad things about me but I had sex with 2 guys around that time and now I'm wondering who the father of my baby is. I'm not really regular on my menstrual periods so I cannot really calculate something with the help of my period. I just remember that the last time I had my period was 2 months ago. Now when I'm calculating 5 weeks and 5 days ago it is the day when I had sex with my ex boyfriend. I also had sex the day before it with him. However, I also had sex with my current boyfriend 2 days later after that day and since then until today I had sex with him 5 more times. I don't really know, but this means that the father of my baby is my ex-boyfriend? Or there's still a change that it is my current? I really want to know what are the chances and how I can calculate it more precisely? Thanks...