Worried that cramps aren't normal

Miranda
I'm about 6 weeks pregnant and my first doctor appointment isn't till July19th, I have done a set of blood work and the numbers were progressing like they should. The thing that worries me is I've been having cramps even before I knew I was pregnant. I know everyone says they are normal, but every once in awhile the cramp is worse than it had been. I get so worried that it's not normal and there's something wrong with the pregnancy or I lost it or something like that. Is there anything anyone can tell me to maybe ease my mind? I wasn't expecting the cramps when I got pregnant.