Day 16DPO - period was due on 18th. Took a clear blue the morning of 20th (yday) faint positive (see attached). Took a digital clear blue and pink dye test that afternoon both negative. Today when I went to the loo and wiped there was light pink discharge. Haven't had much other than that when I wee there is the occasional pink discharge but put a pad on just in case. Now at (23:45) I went to wee and saw this in my pad but it's still a very minimal amount (check attached TMI photo). Now for reference my periods are usually a heavy red flow from the day one of my period. Any advice on what this is? Is it implantation bleeding, period starting or possibly a chemical pregnancy? Any advice would be appreciated. I'm a recently turned 24 year old trying to conceive for the first time 😫