Am i going crazy or is my body?!

So my af is very late 8 days I believe. I have tested recently with the cheapie Walmart tests and were negative. I've been having alot of pregnancy dreams every single night. It's so vivid and I swear I wake up thinking it's real. This is why I tested. I'm having slimy white stretchy discharge as well. My periods haven't really been regular. So at this point I'm just thinking my body is out of whack. But should I test again? Maybe a diff brand test? I'm thinking a digital? Or should I just go on thinking I'm out for pregnancy?