Period taking longer after switching to minipill?

I used to take the combined pill for a year after having to switch over to the minipill due to the estrogen, my periods during the stop week used to come within 2 days of stopping, 1 day alot of bleeding and 3 days tiny amounts of bleeding and then a day or two just brown old blood.
Now after switching 11 days ago my first minipill period started 3 days later than usual and now im on day 6 of my period and still bleeding alot, even having tiny dark red clots something i only had on the heavy day of my stop week. Also my cramps have switched over to just sharp stabbing pains? Something i also didnt have.

I think i should also mention that I have learned more about the minipill while searching for similar experiences on this subreddit than what my doctor has told me. All she mentioned was that 'for some women it stops completely while for others it just gets irregular' so anyone’s experience with the mini pill would also be appreciated! Since i have absolutely no clue now what to expect