Implantation symptoms

Hey all!

So I know everyone is different, but I am curious I know what symptoms people have experienced during the implantation process. I want to say I’m at the 5-6dpo window and obviously it’s too early for pregnancy symptoms and to test, but for last couple days I have loose stool after I eat just about anything. Either that or I have bubble guts like no other. I’ve also noticed light cramping in my lower back. Like I said, I know these aren’t pregnancy symptoms, but idk. This isn’t normal for me after my fertile window. I’m usually pretty good up until AF is suppose to show up.