nauseas every morning...

Hi,
Welcome to ehealthforum,
Shorter and lighter periods, nausea, heartburn, cramps could be suggestive of early pregnancy symptoms. Look out for development of any other new symptoms. Wait and watch for your next periods. Urine pregnancy tests usually start showing positive results late after about a week from missing periods. Sometimes they can also show you false negative results and hence cannot be relied upon for accuracy. Urine pregnancy test kits are calibrated ones, so they show positive results only after the hormonal levels in urine have reached a certain level. Blood/serum HCG level test are accurate and can detect pregnancy earlier than urine test.
Consider visiting your gynecologist/obstetrician at the earliest for examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately).
Take care.