7 days late lots of cramping but no period pregnancy test negative could you still be pregnant?

it could be possible, that you are preganat take another test to be sure if both are negative then your just having irregular periods , i have had the same problem before , the fact is periods are often irregular due to things like stress, and not eating properly but they sort themselves out eventually usually in ur early 20's .
also if you are on the pill or have taken the morning after pill you can skip periods and often still have cramping.
hope that helps