Help please

I’m a first time mom so I’m new to what it feels like to go into labor. For the past 2 or 3 weeks I’ve been having very painful very random Braxton Hicks contractions. This morning I woke up to get ready for work and even if I didn’t have to pee I felt a lot of pressure and What felt like the urge to pee. This has been going on for about 2 hours. Not to mention I’ve also been having What feels like mild period cramps every 10-15 minutes that don’t seem to be getting any better and I feel nauseous . I’m 38 weeks 1 day. I have an appointment with my obgyn at 1:30pm (it’s only about 9:30am right now). Should I wait till my appointment or should I call and see if I can get in any sooner?