Doubting I'm pregnant...

Hey you guys so recently I just found out that I'm pregnant well at least with two positives. Idk how many weeks I am but I honestly don't feel prego or anything. I do wanna have kids but to make sure if I am really prego I'm worried that maybe next week if I take another test it'll be a negative.. Plus I'm 8 days late for my period.. Is there a chance for me to get another positive or no?