Thank you all. Bleeding has pretty much stopped that is not a fucking cue for it to start again, thank you body, my temperature was a bit high and my blood pressure was through the roof no shit sherlock, I was a bit worried and cramps have pretty much died down. Hospital think it may be that the UTI wasn't quite cleared by the antibiotics but aren't sure so I need to go to the EPU in the morning with a urine sample, and they'll scan me when I'm there too. It may be a long wait in the morning as it's the Emergency Clinic so we've been pre-warned to take a book as we may be there a couple of hours.
I'm glad I told my boss I was pregnant after the 8 week scan so I can just ring him in the morning, tell him what's happened and not have to properly explain everything, though. (It'll just be "Hey, it's me, started bleeding at the weekend so am off for a scan. Will call later and let you know what's happening" rather than either having to bluff it because I don't want to tell them or telling him over the phone that I'm pregnant).