annoying period

Ive been taking the pill since feb and have now had my period (more like old blood) for four weeks now and im OVER IT! I dont know why im bleeding because im still taking my pill. And the worst thing is im alergic to the material that Pads are made out of so im covered in a rash because its been legit 4weeks. Can someone please help me, i dont want to go to the doctor as i cant afford to but i want it to end.