Miscarriage?
Im 19 years old, sexually active but technically still a virgin. 4 days ago I thought I was starting my period but it was just light brown spotting then disappeared then the next day I had the most unusual 'period' I have ever had, it was heavy thick black and dark brown blood, then the couple days after was just light dark brown blood, my thoughts automatically went to "miscarriage" even though I haven't completely had sex, it has been close and precum has been involved a few times. I have read conflicting stories on the internet, some say precum can get you pregnant, some say it cant, some say all my symptoms point to a miscarriage some say its just "old blood" which doesn't really make sense to me.
I just need a straight answer because this is really starting to worry me, also, should I go see a doctor? or is it too late now because I've been procrastinating for 4 days.