Implantation Bleeding??? Help?!

So, I've been religiously taking TriNessa but I've been binge eating Rice Krispies and this bleeding I'm having is not like a normal period. Im just curious if I I could at all be pregnant. I've been reading articles like crazy but I think some real people responses would be helpful. 
I've read a lot about implantation bleeding and I'm wondering if that's what I'm experiencing.
I haven't had any breast tenderness or vomitting. But I have been having mild cramps, some headaches, some nausea (not consistently), and the bleeding like I mentioned. 
HELP?!