Okay,so this is gonna sound so stupid. I have done so much research over the past few days and I think I know everything but I wanna hear it from someone else. Please don't ask my age because that's not important. Okay,so I got my period on the 7th of this month and I have a 28 day cycle.I looked up when I would ovulate and it says the 21 but when I count it myself it's the 20th. My boyfriend lives in a different state and he's coming to see me the 15th and the 16th. We are gonna have sex the 16th or so we have planned. I've heard sperm can live 7 days in the right conditions. Now <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> says my fertile window starts the 16th and if I ovulate the 20th or 21st of July would I still be able to get pregnant since it's in the right conditions? I think I can still get pregnant but it's a stretch but I just wanted to hear from you guys.