Excessive bleeding?

Ok so I had a baby 5 and a half months ago bleeding stopped after 1 week then I got my period at 6weeks PP then after 5 days it ended and started again 28 days later I then got put on depo and bled the whole 3 months of it pretty heavy for the most of it too because of that I was put on mini pill bleeding stopped then started again 2 weeks later stopped again for 2 days and started heavy again ...,,

Is this normal ?

Could something be wrong ?

What should I do?

The bleeding is pissing me and my partner off and kinda has me at edge as I don’t know if normal or not