I Missed My Period In October , But Haven't Had

I missed my period in October , but haven't had sex since mid - August but had period in late august ( normal time it comes) , had it in September to same time but kind of lighter flow then normal . but then in October I didn't get my period and I've been having pains right above my waist , & a lot of the time a sharp pain just in my right side by my hip . & I also have been feeling a pressure/tightening under my ribs . I've been having more headaches then normal , kinda sensitive breasts . kinda have nasea but I have asthma that has also made me throw up/feel nauseous ,in the past . I have frequent urination like I have to go badly even if its a little drop , & I feel bi polar I could be happy then see something on TV sad & I'm crying . I feel over sensitive for no reason .do I have anything to worry about or is it nothing to worry about ?