Cramps

Does anyone else get cramps each week,I don't have cramps everyday  . It's hard for me to describe. Like since I've found out I was pregnant I've had cramps each week starting Thursday ,lasts for about a day or 2. I only get them When I progress each week ,I guess. Like the day I was 7 weeks I got them , the day I was 8 weeks I got them and so on. Yesterday I made it to 13 weeks and I had cramps. Is this normal ? Or does anyone know what I'm talking about?