I slept with 2 different guys and I'm trying to figure out when I conceived. My last period started 12/24/2012 and I'm curious to could I have had my period if I conceived 2 weeks prior to my periodor if iI got pregnant right aafter my period.. I had set 1/5, 8, and 11/2013 and took a test on 1/12/2013. Could I have gotten a positive result that soon?

It's IMPOSSIBLE to tell from such limited information, but as you have a concern surrounding paternity the ONLY surefire method is a DNA test after the birth..

Dating is all Best Guess and can be wrong..