Ok, I'm looking at the girl's underjams, but also the pampers cruisers size 7s. The only problem or hesitation that I'm having is would they fit. This is going to be my first purchase ever like this, so I'm extremely nervous. Not by getting caught, but if they fit or won't they fit. I'm roughly 144 lbs. with a waist of 32 in. Any suggestions would be appreciated.