Maternity jeans uncomfortable?

Nabi • Mom of 2: girl born in 2015 and boy in 2019
I am 16 weeks now and my jeans are starting to become tight, even though I can still wear them with a Bella Band right now. I did buy a pair of maternity jeans and wore them for the first time yesterday. Many people rave about how comfy they are, so I was surprised that I didn't think so at all. My main problem was that they seemed to slide down constantly, so there would be bulk fabric in the crotch area and the stretchy part would come down far enough that it was visible under my shirt. It's not that they are too big in general, but they still slide. Does anyone else have this problem? And have you found a way to fix it? It's not like I can wear a belt...? Or is it just too early to wear them?