Is this implantation bleeding ? TMI

Sasha
According to <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a>, I was ovulating on the 4th. Cum got inside me that night. On Monday the 11th I had a light pink blood. I've never spotted before ever in my life. I'm not supposed to get AF until the 19th. I've had very mild cramping. My period cramps are so serve I usually end up not being able to sleep and just cry. Do you think this could be implantation bleeding ?