Okay ladies I need some opinions! I ovulated on 7/3 and AF was supposed to start 15th or 16th. On the 15th I literally had 1 brown spot when I wiped. Yesterday had a brown spot here and there and one had a touch of pink and today I've had 1 more brown spot when I wipe and that's it. I thought I started so I left a tampon in and it was empty when I took it out. I've been TTC for 4 months could this be implantation?