unexplained cramps and pains

I skip my placebo pills (per dr) so I don't have my periods or I haven't in two months, so this past week I've been spotting and now I've been getting crazy cramps and a weird back pain low. These cramps are either steady or a stabbing pain. And I've been having little discharge if I'm not spotting. Anyone else have had these symptoms. Are they normal? Should I get it checked out?