Ok, I am 39 and I have a 16 year old son. I haven't been pregnant in some time. Although we have considered getting pregnant... but never really tried technically. Well my last period started on 10/23/2012 It lasted it's usual 5 days. My ex and I seperated for a while, but we reconciled ironically the same week I ovulate. Well according to the charts I should have been ovulating 11/2-11/8. We had constant sex during that time period..especially on 4,5 and 6th. although I didn't know that was my ovulation time until after the fact. I have been tired and irritable with terrible insomnia. Waking at 4 in the morning on a regular. Well my cycles are usually very regular 28 days and I am trying desperately not to get my hopes up. On 11/13 I had a pinkish/brown discharge when I wiped..I had never seen before.This happened several times that day. I also noticed a mild irritation..I thought I had a yeast infection. On 11/16 I felt upset stomach and mild cramping, so I went to bed early. When I awakened on 11/17 at 5am... because I can't seem to sleep soundly.... there was a dark reddish brown thick discharge... scared the sh** outta me!! As the day progressed I began to spot and then began a red flow. It is now 5 am 11/18 I am awake again and the flow has slowed..... Not as heavy as my regular cycle but definitely not spotting. I have been getting cramps all day... not as bad a menstrual cramps but definite pains. My regular cycle isn't expected until 11/20. Could I be pregnant? I haven't ever heard of implantation bleeding until now. Most of the descriptions are light and spotty.....Am I experiencing a miscarriage? I hope not....