Hiya
I am on the pill and could only be prescribed the mini pill because of my weight. I take cerazette which mucks up your cycle for the first couple of months but thereafter you don't have a period. You take it everyday and have a 12 hour window. It's great having no periods and I've had no major side effects / weight gain.
The nurse told me they will prescribe the combined pill if your BMI is under 35 xx