Marvelon pill and spotting

I was put on the combi-pill in secondary school/college years and it was to help regulate my periods which it did but I kept getting extremely bad migraines the first day/just before my period came and I would have to have the day off and stay in bed in the dark. So once I explained this to my Dr we both agreed that I would come if it and switch to a different pill. Which I did but that wasn’t any better so then that lead me to getting the Depo-Injection

I’ve been taking marvelon coming up to 2 moths now and starting to experience really bad womb cramps and a lot of black/red discharge, I don’t know if this is spotting or just old blood from a missed period. It was suggested by my doctor that I take marvelon because I suffer with bad period cramps due to chronic pelvis pain.

I have been on Marvelon for about two months now, I have tried 3 pills prior to Marvelon but Marvelon is the only one that I have had bleeding every day. Its sort of bleeding discharge, a darkish colour that comes out on my pants every day. It is very frustrating. I also am suffering from awful stomach aches, I can only stomach plain food like bread and at times cannot bear to eat meat, fish or vegetables. This poor diet has lead me to feeling even worse, once we come out of Lockdown I will be looking for a alternate method. I want to add I am very sensitive to the pill, I have had problems on all the pills I have been on, however this is the only pill that I have bled on every day.