Nervous

Hey everyone!!!! I think I am going crazy. I am 6 days late on my period and I’m kind of crampy, I’m tired, my boobs are aching and my back kills!!! Feels like my period i know, but where is it?!? I took a test last Wednesday and it was negative. I started having clear CM a lot of it and I thought it was my period but NOPE. around my lower stomach (almost like ovaries) is like achy idk. Should I test again? Do I wait? I’m 23 and clueless about how pregnancy and everything works so I appreciate that help and advice in advance.