Odds of pregenancy

Patient: Hi I was just wonder if this is possible me an my boyfriend had sex on cycle day 13 witch was 5 days ago this morning I had a spot of blood when I wiped myself an none after that my peirod isn’t due for another two day also I’m having back pains is it even possible that I’m pregnant an if so what is the odds

Doctor:

Comments / Follow Ups

Patient: I’m sorry I ment my peirod isn’t due for another 2weeks