Confused..........

Am
So 5 months ago I had a miscarriage. Every month since I have spotted dark brown blood 3-5 days before my actual period along with some heavy cramping. My husband and I have been trying to conceive every month. This past month we DTD every other day for about 2 1/2 weeks after my cycle (whew) lol. This month I had some interesting things happen. These are the details: 
October 1-7th- Period
October 7th-23rd- DTD every other day 
October 29th I had sharp pains when I coughed or laughed where my right ovary is located, no cramping, no spotting nothing 
October 30th- I didn't have any cramping but I experienced very very distant pulling. I spotted only when I wiped and it was watery dark brown liquid. 
Today October 31st. I feel fine, no cramping or pulling or anything, but I have light pink creamy discharge. 
I tested three times this weekend and this morning all negative. 
I am supposed to be having a visit from AF today. What could all of this mean. Could I have experienced late implantation bleeding and my negative test today mean it's just to early to tell.