Taking 3 pills

I missed Monday's and Tuesday's pill (I don't know how because I'm convinced I took Monday's) but I came to take yesterday's and there they were, I panicked and took all 3 which I probably shouldn't have done, but I think I've come on my period 2 weeks early because of it, either that or I'm just spotting. Is this normal, apparently it can happen but I just want to make sure.