Cramping early pregnancy

I’m 5 weeks + 2 days and I keep getting slight on and off cramps. I have been suffering with trapped wind and a little constipation, so I’m unsure if it’s that? I just can’t help but worry. I’ve already took 3 tests and want to take more just to know I’m still pregnant. I’ve also booked an early reassurance scan for a weeks time. Has anyone else felt like this?