Abdominal pain

Sorry this is a bit long; I'm 24+1 weeks pregnant, and I have had anything but an easy pregnancy. I am high risk for a partial placenta abruption and a SCH. I went for an ultrasound yesterday and the tech said there was a spot on my placenta that she had no idea what it was.... And that she's not sure if it's an actual placenta abruption. Anyway, last night I was awake every 1-2 hours with lower abdominal pain and up to pee. It wasn't contractions and I cramp more during the night and while laying down so I just tried to sleep the best that I could. Finally this morning I decided to page an on call doctor at the hospital to see if I should go to the walk in clinic or go ahead and go to the ER. I thought it might be a bladder infection but wasn't sure so she suggested ER. They sent me to L&D for observation which I felt kind of silly for, but they monitored me and did a urinalysis which came back +1 for bacteria and had mucus in it. The nurse called the doctor on call with my results whom is not my regular doctor, but they are in the same building/practice, and she told the nurse that she doesn't think it's a bladder infection and said that I have a funky placenta. The nurse said I wasn't having contractions but my uterus seemed agitated/irritated. I feel as though the doctor brushed me off, and thought it was kind of odd that she knew about me and my placenta issues when she's not even my doctor, and the nurse thought it was strange too. I'm still in pain and I know it's not just nothing. Has anyone had a bladder infection/UTI that caused quite a bit of pain? It doesn't burn when I urinate or anything, but i feel like I was brushed off just because I'm the girl with the "strange placenta."