something is wrong!

Something is wrong and I don't know what it's on Monday  my stomach was cramping so bad it hurt all day nonstop I don't know why. I was 24 days late yesterday when I started what I assume was my. Although the blood was brown which I know that means old blood but I didn't know why and I didn't really pay much attention then this morning when I got up to use the restroom brown chunks almost like blood plus came out of me and the cramping started again I don't know if it's my birth control I don't know what's wrong and I don't have insurance to go to the doctor so I'm just looking for some advice I have been bloated for days