Question: I Don't Know What To Think Say Or Do

I don't know my actual cycle but I keep track of when my periods start and end on my period tracker app and my I'm 6 days late..but when I was 4days late I bought a 4dollar test at family dollar and it said negative..but I'm not bloated nor am I breaking out..I'm emotional and mood swingy get nausea kinda when I eat or drink certain things I only want certain things to eat or drink and I have a lot of discharge?????