We decided to give TTC a break for a bit. Period started 1/27...we had sex on 2/1-2/4. Fast forward to 2/14 and I wake up with tender breasts. On 2/15 cycle day 20 I go to urinate that morning and there's a bit of bright red blood when I wipe and I noticed it also stained my panties. After that saw no more blood. I don't want to get my hopes up but could that have been a sign of implantation?