What Causes Severe Pimples On Face At The Age Of 25?

I am 25 now. Now-a-days i am getting pimples continuously at my face. I have an oily type of skin. Usually i will get the pimples only during the periods not often. but now-a-days i am getting pimples more often. I had a doubt like, i am under follicular study treatment so I am taking tablets regularly. Will that be a reason for getting pimples at my face?I am doing home treatments to avoid pimples. But i am not getting the solution. How to prevent this? Kindly help me out by giving some suggestions.