need advice.....I will be 36 weeks on Saturday. today I had my biometric ultrasound and nonstress test. I had 1 contraction in 24 minutes. BUT I have been hurting all day like in my lower back and my tummy has been so sensitive to touch. I also feel like my pelvic bone is being crushed (only way to explain it). the last time I was checked was about 2 weeks ago when I was have contractions that were more than 10 minutes apart. should I be concerned? My husband and I had sex earlier today but it was extremely painful on my part :(