Could I Still Be Pregnant While Having A Missed Period, Or Is It Due To Past Depo Use And Irregular Cycles?

Hello, I think i am pregnant. The first couple pregnancy tests i took had fainted lines but the rest ive brought were negative so, i went to the doctors for a urine and a blood test and they’ve all come out negative also but i have this feeling in my stomach like something is there . I have all the symptoms for pregnancy and im also 11 days late for my period . Im not sure if my period is still irregular because i was on depo for 2-3 years or if im just over thinking it . Please direct me to what i should do