I was 3 days late and then I started that was apr 8 and now it is apr 30 and I have not be feeling good and my nipples are so tender could I be pregnant I taken a test like a week a go and it said I was not pregnant shod I what and see if my period comes next month!

Was the late period the same as you normally have?. same length... same amount of flow?
Periods can be late sometimes, for no apparent reason.

If the period was like your usual ones, see what happens next month. If you find you are experiencing more possible pregnancy symptoms, try another pregnancy test in about a week, or maybe see your doctor for a pregnancy test at the office.