Braxton hicks and cramping

Emily • Currently pregnant with second baby.
This is my second baby and I am cramping and having some contractions for days now. My doctor said not to worry unless I have spotting or more than 6 measurable contractions in an hour. But I can't help but worry. It's so different than what I experienced last time. I had to stay home from work today because it was bad. Any tips or thoughts?