Has the pill broken me?

So I started taking the pill in May and my periods were like twice a month instead of once and made me gain weight so I stopped taking it in October and I had a period that lasted not even two days and nothing at all since, I’ve tested to see if I’m pregnant on Saturday and it was negative I also accidentally bought ovulation tests instead of HCG ones and out of curiosity I tried several over a few days and not even a faint line.

I’m really not sure what’s happening☹️☹️

Is this normal?

Edit: I should probably add that I’ve been on the pill several times previously and each time I’ve stopped my periods have still been normal