Look up chemical pregnancy. I had one in September. Happy to report I got pregnant again in Oct and am now 8 weeks.
Well it actually really odd, its not like most it camr a day early, it hurt tens times worse then ive ever had it before, actually its never hurt before i mean the occasional cramp but never hurt. This was the worst pain ive ever felt, it had me rocking. The weird thing is, its really light when usually most of mine are heavy or medium, its really light and watery. I toom some pain medicine and its stopped hurting bit im scared it will hurt again.
It's unlikely that you would be if your period is normal. But yes it is still possible.