spotting.. HELP

Hey guys ! I'm new to this, but I am a little worried so some advice/input would be awesome ... a few nights ago I went into the ER because I was spotting . It was really light and pink. I didn't have any cramping or anything but I do have a history of mc and d&c and am scared to go through it again. Anyway. They did an us at the hospital and the baby measured 6 weeks 4 days and my hcg level was @ 126,000.       I haven't spotted again until today and it's very light pink and only when I wipe. I'm starting to get a UTI, could this be causing the spotting ? Should I be worried or is light pink spotting normal at where I'm at in my pregnancy?? I'm freaking out .