Never thought I'd be in this situation...

So I'm 26 weeks pregnant.. Although there are 2 men that could possibly be the father. Please don't judge me.. Things happen. So according to the default cycle of 28 days, I'm due october 4th. My last period was Dec 28 2016. I had sex with guy A (they both know the situation) Jan 4th and Guy B Jan 12th (that was not planned, we both had a lil too much to drink and are really good friends). I track my period so I know how long my cycle really is. According to <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> my cycle is 33 days and leutal is 13. My period lasts for 5. I'm confused because different sites say different things. And at one point earlier in my pregnancy they said my due date was october 9th. I need help trying to figure this out, who is it leaning more towards? Eventually there will be a dna test but this has been bothering me for some time...