What Causes Stomach Cramps, Gas And Stomach Rumbles After Taking A Few I-pills?

Hi doctor. I had unprotected sex in feb and have consumed atleast 4 to 5 ipills in 15 days.. my last period was on 21 jan n this month feb my perriod has been delayed...but i get this gas..crampy feeling in my stomach n sometimes even growling noises..i feel like pain in my tummy.. i have done 4 home pregnancy test n it shows negative. i also get slight blood strands in my urine n sometym discoloration