When you say you had a Dr. consult, what did he do while you were there. If you had a vaginal ultrasound then it is not uncommon to have some bleeding, especially since yours was short (5 min) because the uterus gets sensitive when you are pregnant. What you need to worry about is if the bleeding is really heavy, there is clotting and bad cramping.
i feel for you on the worrying unfortunately i do not know what that means but i know for a fact sometimes even when pregnant you can spot just like you said only 5mins and thats it .as long as the doc says all is ok which seems to be as u said "no evidence of subchronic bleeding" you should be ok.and bedrest is always great for an expectant mom.best wishes dear