Cramping?

How normal is it to be feeling cramps that feel like a step below period cramps? My anxiety is driving me crazy bc last year I had a miscarriage at 9 weeks. 2 days ago I tested positive 3 different times going by my last period I’d be about 4weeksish as my last period was on Halloween. I know it’s early so they’re normal now bc of implantation but everything I’ve read about them says they stop after 14dpo and depending on when they consider it to start I’m 15 dpo. And I’ve had small cramps all day long. I had a break down at work in the bathroom bc I had myself all worked up over my cramps that I was relieved but extremely worried when there wasn’t any blood at all. My first appointment is on the 30th- they wanted me in right away bc of last year’s miscarriage.— is it also normal to be this early and feel nauseous? Isn’t it too early for that?