Idk if I’m pregnant

But as u Cn see December I had a full menstrall n January 21 I had intercource with my husband bleed bright red n then brownish in the samday so I thought it was a period but idk the app say I won’t get my period till the 24 of this month but I’m curious could i b pregnant if I ddnt have a real period lasting 3-or more days I already have a irregular period and I haven’t taken a pregnancy test just bc I’m waiting to see if my period will Come regular this month but in 5 days I will take a prego test just need some input