help v confused 😔

I had my period and it was normal then it ended on the 10th of August. I've always been pretty regular like every now and then it came a few days early or a few late but I've been bleeding for 2 or 3 days now and I thought it was spotting at first but it's now to the point where i bled thru and finally grabbed a tamp. someone help. 
could missing 2 pills fuck me up like that?Â