High risk pregnancy

I'm about 5 weeks along and I've been cramping on both sides on and off. Not light but not severe. No bleeding, thank goodness. I'm wondering if this is normal. This is my second pregnancy. With my first, I went into premature labour at 26 weeks and lost my baby girl. Therefore this time around I'm on guard and everything is worrisome. Any tips from moms who had high risk pregnancies?