I'm currently 27 weeks and have been worried about preterm labor. My lower back has been hurting off and on, yesterday I had flu like symptoms, today(maybe tmi) I had SO much discharge like A LOT way more than normal(but only one time), I've been using #2 a lot lately idk if that has anything to do with it but it's pretty abnormal for me, and just about 10 minutes I had the sharpest pain in my stomach and back like I almost cried, but it went away. What should I do? No vaginal bleeding btw