Cramping at 6 weeks

Is minimal cramping at 6 weeks pregnant normal? It’s mostly low like down in my vagina. It just started in the 6th week and is worrying me a little. It’s very minimal and comes and goes but usually only lasts a couple of minutes. I mostly notice it laying down. I don’t have any bleeding or anything. I’ve had 3 miscarriages this year so this is freaking me out a little. Please let me know if this is okay. Thank you!!