Period

Might be a dumb question but When can you start using tampons after giving birth? And I thought breast feeding prolongs the monthly periods?! I also did get the depo shot around the 6th of this month (6 weeks after giving birth). And I’ve been bleeding for over a week. This isn’t the first time I’ve gotten the depo shot. I’ve gotten it before and last time I got it I wouldn’t get my period.