My new pill is messing me up

I go to planned parenthood for my birth control because my insurance doesn’t cover contraceptives (it’s grandfathered in so its not illegal) and due to that the pharmacy I go to gets to just pick whatever pill is the cheapest to give to me every 3 months.

In October I received a brand new style of pill pack and my period has been for lack of a better word, severely fucked up, since. I got my period 12 days after starting the new pill pack. And then the next month was a regular(for me) 29 day cycle. Well I got my period 11 days after my last period ended this time.

I’ve talked to planned parenthood and they were basically just concerned I was pregnant due to irregular bleeding. I’ve taken pregnancy tests and that’s not true, but I’m so sick and tired of bleeding all the time! And I’m so frustrated! I don’t know what I’m doing wrong!