Hi, and thanks for your medical question on eHealth forum!
Any spotting or bleeding in first trimester should never be ignored. It can be due to simple causes such as cervicitis (infection/inflammation of cervix), vaginitis (infection/inflammation of vagina), or it can also be due to a part of uterine lining sloughing or due to threatened abortion. Sometimes it happens without a cause.
Also since you have blood in urine, you could be having a UTI. You should follow this up with your gynecologist and schedule an ultrasound if one was not done after bleeding episodes started. Hope this helps. Take care!