HELPPPPPPP

Hey ladies , I was told I had pcos . & I would never have kids , but I ended up getting pregnant (which is a blessing) . Okay so my last period was may 16 ,I had it on my <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period tracker</a> , but they're saying it was the 31. My due date was March 6 , but I had my bby girl March 2 due to pregnancy diabetes . When did I conceive ? I feel like they went by the ultrasound .