My boyfriend and I had sex fOr the first time on July 21 and I took the pill on the 22. The condom broke and he hadn't finished, so just as a precaution I took the pill the next day. A week later I got my period and had spotting leading up to it. I started getting really bad cramps through out the period and they have still been on and off, I also get headaches. Is that normal? Or could that just be from a bad diet? (Though nothing in my diet has really changed)