Birth control / period / pregnancy

So as y’all can see my periods have been a little irregular. It’s been going on a lot longer than what y’all see. Normally it switches off from me starting my period in between the 20th-29th.

Yesterday I started my period (the 26th) and I just got home from school and my titties are leaking milk again. I’ve been feeling pregnant lately but I’d say the amount of blood I’ve lost since getting my period would only fill up about half of one pad which isn’t normal for me at all on a regular period day. I normally bleed more. Do you think I could be pregnant?