The last 5 or 6 days I have been very nauseous. Never to the point of throwing up, but still feeling nauseous. It was also something that I had experienced on and off throughout the entire day. In the last 2 weeks I noticed that my breasts were getting bigger and really sensitive. Neither of these symptoms are regular menstral symptoms for me. Lastly, my skin has been breaking out like crazy. Normally I have very clear skin. I can't remember the last time I had a zit or a pimple. So, I was starting to think that I could be pregnant. My husband and I are doing the "not, not trying method". 

Today, however, I started my period. normally my period starts out light builds to a heavy and then eases back down to light and it's done. Today my period started very heavy, and lots of cramping. 

Evaluating my personal life, I don't have anything new or stressful going on that could be affecting my body (nothing that I can think of).

So, could this be a miscarriage?