I pill side effects

Hello I am 22 yr woman studying in clg . I really need ur help because I am very scared to approach any gyane in real life. I am not getting my periods since last two months . I was getting my periods regularly till October 4 then since I took ipill on 15 October and again got my periods 5 days later since then I have not got my periods unless I take ipill I have taken it one time after October .Pls help me what to do I am very scared . I am willing to pay you consultation charges also if it is required Thank u