What the heck

So I took a test yesterday morning and it was a faint positive. I took another one yesterday evening, this morning, and then again tonight and they are all negative. Has anyone else experienced this? Is there still hope? I’m experiencing abdominal pain (like lower and to the left), nausea, back pain, super bloated and frequent peeing. I also noticed light pink blood when I wiped one time yesterday and nothing since. Could it be a CP? Should I test again in a few days? Thoughts?