Change of Pill

Minnie • 19/England🌟
Does anyone have any experiences with the progesterone contraceptive pill they don't mind sharing? I've previously been on Cilest which is a brand of the combined pill for the past four or five years but have now switched as it has made me gain quite a lot of weight. 
My GP told me that your periods can be irregular, ranging from bleeding for two weeks straight to not having a period for six months. 
I originally went on Cilest because my periods were heavy and extremely painful, so will the progesterone pill help to make my periods less painful?
Any advice or experience would be lovely!