I need some support

Yesterday I went into the ER cause I was bleeding when I peed and had some mild cramps like a period. I am 5 wks pregnant. Found out I have a unirary tract infection, I have been reading stories about it like crazy. I am so scared that this will hurt the growing baby. And they tested my hcg level and said it was 300. Their going to test it again in a few days. Im on antibotic and drinking water. Whenever I see the blood it freaks me out though. My cramps are better and the blood does seem to be lessening or so I hope! I need prayers that I will get through this and my baby will be strong and healthy.