Morning after pill

Hey all.

I took the morning after pill on the 1st of June, I started bleeding on the 6th of June like a normal period, lasted 3-4 days.

However, I was meant to be due for my period around 5-6 days ago. Is it possible for the pill to mess up my cycle that much? I was told that bleeding can occur between the time taking it and my actual period, and that it can be as heavy as a normal period. however that apparently my period still should have come as per usual.

Took a pregnancy test 5 days ago, it was negative.

I will be seeing a dr soon just wanting to hear other people’s experiences, and how long it took for your cycles to go back to usual.