Why am I spotting so early???

Heather

Aunt flow isn't due for at least another 2 weeks and I started spotting yesterday. It was light pink and mainly when I wiped. It was also mixed with clear mucus. Today it's a little heavier and darker. The photo is from today. My husband and I have been TTC for several months now too. This has never happened so early and I have no idea what to think. Ovulation? Implantation? Stress induced?? Another underlying problem??? 😩😩