Cramps in Pregnancy

I’m sorry if my question is stupid. My first pregnancy ended in a missed miscarriage so I get scared more now. Everything scares me.

How long is it normal to have slight cramps? Is it normal throughout the pregnancy? Is it normal around 12 weeks? Please let me know and don’t judge me. I’m high risk with chronic conditions and I have to be more careful than others. I’m just scared.

Also please let me know what are signs to worry about so I know what’s normal & not?

Thank you for reading & thank you to those that answer my questions.