False Implantation Symptoms?

Elizabeth

Has anyone had implantation symptoms but then no pregnancy? I'm 8dpo and trying so hard not to psych myself up about being pregnant but I've had every symptom of implantation except the bleeding. Having to pee every 5 minutes, cramping, sore boobs, noticeably elevated BBT, headaches, even mood swings. AF is not due til 8/6, so I don't think these are symptoms of that. Any advice??