Hi there I had a molar pregnancy just over 2 years ago I've been trying to get pregnant by coming off the pill for a year now with no such luck.?

Complex issues. More than 91% of women with a history of hydatidiform mole pregnancies return to normal fertility rates after about a year after the event. Some causes for infertility may be due to damage to the uterus leading to miscarriages. There are many other very complex issues involved. A fertility expert would be the best person to talk to.
See fertility doc. If you're actively trying to get pregnant, but can't, see a fertility specialist.