Earlier today around 4pm I went grocery shopping and came home around 6:40pm. And went to pee and had some blood in my urine . Ever since I left the grocery store I've been in so much pain . It doesn't feel like contractions, but more like serve cramps. My back and legs have been killing me. I've tried laying down but it doesn't help. I will be 36 weeks tomorrow. I'm debating if I should go to the er? Or not? Help?? Advice please!!