My stomach is feeling like it’s tightening little by little and I’m getting cramps to the point when I wanna cry.

You might be getting contractions. Since you're only 29 weeks they can give you something to stop them if that were the case

If it’s that painful I would go get checked out could be preterm labor or something going on making you hurt infection, dehydrated I would at least give them a call

Like my stomach isn’t dropping

I’m just 29 weeks 😭

If the tightening were just uncomfortable and no pain it's normal. But since you are having pain I think you should get checked. It could be preterm labor.