Pelvic Pain @ 16+3 wks

I have a serious question. 1/31/17 I've been having a lot of pressure in my vagina area and period like cramps in my back like I couldn't even walk. I sat my butt down all day trying to find ways to stop the pain including taking Tylenol (which never helps). I had an appointment with my obgyn 2/1/17, I told her about it and she said it's just Braxton hicks but it also check my cervix and said it's still close but the pain was still there in both places! She did advice if the pain worsen to come back in see here again. Since them it's has been on and off but this today lord I was in all four crying my eyes out like this pain feel like labor pain. I've tried to sleep it off, walk it off, Tylenol it off, even warm pad on my lower back and nothing is helping. Of course it's the weekend the office is close, I called the nurse line and he was no help. "If your not bleeding that don't be considered" WTF 😶😑😠😳 I want to go to the ER but I don't want to get sent home I feel as if something is wrong. Should I go to the ER?