Am I having implantation bleeding or??

My period is in 5 days and I ovulated about 9 days ago. On Dec 7 I had some pink spotting once, just when I wiped, the next day once more only light brownish like old blood when I wiped once, then again yesterday just once when I wiped. What is this? I've been having cramps, my breasts are tender and have been getting waves of nausea. I've tested n they say negative so far. *** Update I tested again and got this. In er now to see why I'm spotting still