Pill problems

Sorry if this is not the right place to post but not really sure what is.

Ive been on the pill (Ginet) for the last year and a half with no problems. All of a sudden about a month ago I started bleeding, when it wasn't the right time and I hadn't missed any pills.

This went on for about 2 weeks so I mentioned it to my doctor. She wasn't concerned as it wasn't painful. She said to talk to her again if it kept going. So I went back to see her a week later as it still was. And she decided to change my pill to Ava.

So here I am 2 weeks later still bleeding. Its not heavy but not spotting either. Like the middle of a period sort of thing.

Im not sure what to do. Go back to the doctor? It's not painful but it's been so ongoing. This did happen to me once before years ago but that was because I missed some pills. I have never missed any since Ive been on this time around.

Im thinking to just stop taking the pills altogether.
But wondering if I need to have any tests?

Has this ever happened to anyone?
I am on medications for depression, blood pressure and hypothyroidism. Could they perhaps be interfereing?

Any thoughts appreciated