35.5 weeks and cramping

I got checked Thursday and I was dilated 1.5 cm, but I've been having cramps for two days. Some in my back but mostly in the front like a bad period. Is this the baby stretching, or should I start staying close to home because he is going to make his arrival soon? FTM so this late in the game I think everything is his impending arrival. I did have a couple of contractions last week.