Back in 2011 I too had severe pain that woke me in the mid of the night. It started When i was 3 months pregnant, & lasted until i was 6 months. I Went to the ER so many times they said it could be kidney stones, or an UTI. They obviously didn't know. They ran blood tests, EKG's, ultrasounds? They had to send a few bottles of my blood out of state to get tested. I was scared to take any type of meds for the sake of my baby. They'd always hook me up to IV & give me morpheme. & wait a couple hours & send me home. I hated it! But that's what took my pain down a big notch! So the first time I got an ultrasound done they said no gallstones. The second time around they checked thru the back, & apparently I had a lot of them. So they scheduled an emergency surgical removal of my gallbladder when I was 5 months pregnant! I prayed for my little angel until I dosed off. I stay in the hospital for a few more days, & they release me. Since than I have not had pain like this? Now almost 2 years later I get the same severe pain! I go to see my doctor & he prescribes me "Zantac" ...try it! I recommend it. It's actually takes the pain away. 30 mins before meals twice a day. In the morning & evening. Hope this helps. God Bless.