Minor side effects being small weight gain, moodswings, stomach pains, sore breasts, but these are all mild and if you even experience them at all, should be gone within a few months of taking the Pill. Pretty reliable if taken correctly, not sure u can take it with Anti depressants, you'll have to check with the doctor. You need a prescription, so yes, the doctor is the place to get it, or maybe Family Planning Clinics, altho i'm not certain. You can also have the injection which is like the pill but only need it every 3 months, only problem with that is any side effects are stuck within your body for like 3 months. But i was on it and it was fine.