I had sex with two different guys.. who is the father? i had sex in march and again in april with a different guy. i have a due date of January 23rd 2015. i believe i had a period inbetween march and april and i did have a period at the end of April. Is the father the March guy or the April guy.
Your doctor is assuming your last period started about April 18, 2014. You would have conceived about two weeks later.
If you had sex with the April guy later in the month then he is most likely the father.
A DNA test can confirm.