My period LMP (last menstrual period) was from April 11-15. I had sex with guy #1 on April 16th and he didn't *** inside me. I then had sex on April 26th and guy #2 did *** inside me. Can someone please help me figure out who might be the dad. I know all about the sperm living inside you for 3+ days. This issue isn't letting me sleep at night anymore, I'm so stressed out about it.