Is Early Implantation Bleeding a Thing??

Bunny
Hi everyone, I could really use some help. I obviously know that none of you can tell me if I'm pregnant and I'll have to wait to take a test, but I'm a bit confused. 
I'm currently on cycle day 14. My period was pretty short this month (around 4 days) which isn't necessarily normal for me but not soooo unusual, and it was moderately heavy so I figured it was all normal. When I edited the dates on Glow, they kept my fertile days the same as if I had had a normal 6 or 7 day period, and after my period was over, I had lots of sex lol. Glow said I wouldn't begin my fertile window for another 4 days (even though it normally begins 2 days after my period is over) but I did notice some egg white cervical mucus and ovulation cramps very early on. I'm not sure why when I saw the ewcm I just thought my body was doing something weird but didn't think too much into it. I didn't notice anymore ewcm after that. Not even during the most fertile days of my "fertile window". Now I'm on cycle day 14, I'm experiencing some spotting, which never happens to me.
My question is, could this be implantation bleeding? It seems a little early according to everything I've looked up, but then again I may have ovulated a bit early as well. Or maybe my period is making up for lost days? Have any of you ever experienced this?? 
I'm sorry this was so long! I appreciate those who will take the time to respond.