Confused pregnant or not?

I have irregular periods-and way back I took pregnancy test cause I thought I was pregnant came back negative twice so haven’t think none of it my last period last month on the 15 I took the first one on the 5th of May both lines was on it but 1 line light then the other so I was confused so I waited bout 3 or 4days and took my second test and came back positive as well but I have a <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period tracker</a> and it says I have 3 days left till my period haven’t spotted at all or started and my boobs been sore backaches headache just wondering it’s early signs or is it all in my head cause I been trying for baby number 2 for awhile and no luck and already have a 3 year old daughter nervous n shocked I want a boy!!!! Fingers crossed that I am