Menstrual bleeding for 1. 5 month. Help!

I delivered a baby 2 and a half years ago and my periods were regular for initial 4-5 months but it stopped after that. I was put on Diane 35 as contraceptive and pills to regulate cycle. Last year I moved to the UK but I started gaining lot of weight suddenly. I saw doctors here and they stopped my pills as it wasn't suitable at my given weight of 103 kg. I started working out in the month of September and my period again started in the month of September but in Since November 27th my period hasn't stopped yet. I passing big clots and now it's more than 1 and a half months. I have got my tests, my sugar, thyroid, liver and kidney function everything is normal. HPV test results are awaited and Ultrasound scan is scheduled on 16 January. I am not sure what is happening with my body. Please help