Pregnant with severe pains!!

As every other day I woke up and made breakfast for my husband and i. We ate and when we were done I washed the dishes while I was washing them my belly touched the sink a little bit and I felt a horrible pain near my belly button. I turned 31 weeks today and I'm a FTM so it's freaking me out. It kept hurting really really bad and more when I touched it even a little bit it started going away but right after I had to come to the restroom. I know what it feels like to get pains from constipation or gas and it definitely doesn't feel like that. Should i go to the er?