I am 39 years old And this is my 1st pregnancy in 12 years. I am now a fitness instructor and teach a zumba like class. I know that anything I did before my pregnancy I can do during my pregnancy unless it starts to hurt. But I am so paranoid as I have been cramping for a week. I am only 5 weeks along. I don't have a doctors appointment until March 4th. am I worrying for nothing? There has been no spotting only cramping.