Contractions or being a weenie

Whitney
I had a pelvic exam today and I'm a stm. Dr said I'm 3 cm dilated but I've been having a lot of pelvic pressure since my exam, general soreness, and cramping. Some feel like heavy period cramps and heaviness in my vagina and others feel like gas pains. Should I be concerned? I'm at work (third shift) and just sooooo uncomfortable. Walking makes the pressure worse :(