Symptoms continue...period still late

[Raven8769]

So I did take a test a cheap $0.88 test on my 2nd day of being late on the 4th in the afternoon and it was negative. I'm still getting all these symptoms including that I can barely eat anything without getting nauseated so I'm hesitant to even eat at this point. Not sure what is going on or if it's too soon to tell. LMP was March 5th was due April 2nd and my ovulation was March 25th we dtd on the 25th and 27th. So I'm completely at a loss. I found this great site that goes through day to day days after ovulation symptoms if you are pregnant so much lines up with it. So I am totally confused. I felt so pregnant yesterday I was miserable. Today I'm ok I haven't ate anything just had coffee and water cuz anytime I eat something I get nauseous and am just miserable I heard you shouldn't cuz it can increase nausea I mean my stomach has been a little queasy but not too bad.