Scared

I keep having cramps and other symptoms but my period just hasn’t shown. Im two weeks late. Yesterday and today I saw faint lines maybe indents. I know technically Im late enough that my levels should be high. But the app could be off or I saw some peoples bodies just don’t produce high enough levels and need a blood test? Im just getting such mixed feelings because people are telling me that my faint lines mean nothing if im this late and other people are telling me other wise and im not feeling good. Ive never been this late. I’ll go to doctor after this weekend if no period. I just don’t understand what could be wrong