Implantation bleeding NO pic but maybe tmi

I'm on an average 36 day cycle and have been for about 6 years now. I'm currently at cycle day 27, AF is not due for just over a week. My fertile days were all last week and I bd'd every other day throughout. This morning I have got light cramps and brown smudges- mixed in creamy. I've put a tampon in just to be sure it's not AF- do you think it's implantation or start if af at an unusually early time for me- very unusually early. Never had ib with my other pregnancies that I recall. TIA 

Vote below to see results!

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors