Your worry is justified but see it is common infection during pregnancy
, blood in urine is abnormal so once again see your Obs & Gynae consultant as you may be required to do a urine culture and sensitivity test and take a course of proper antibiotics in the mean time drink lot of water and fluids which flush urinary system
You should also get a pelvic sonography
to rule out any possibility of threatened abortion
,also to know condition of kidneys, you should take adequate rest .
This infection will be treated in short time and you will be alright
Good Luck to you