Increasing weight problem. help plz?

Once i was regular to gym. i used to work out there for about one hour daily. but now i live in such an area where there is no gym. infact i haven't seen the door of a gym for about a year. i m gaining weight now. i m 23 years old and my height is 5 feet 7 inch. my recent weight is 83 Kg. I know a little about free hand exercise. i have a pair of dumbel of 5 kg each. i m taking LIPTOR(Atorvastatin) Tablet as one doctor prescribed me to lose weight. but it gives me no result. what shall i do ?