when I stand up, discharge just drips out?

Hi,
Welcome to ehealthforum,
Abdominal cramps along with increased vaginal discharge (without other symptoms suggestive of infective cause) could suggest possibility of pregnancy (if you had been sexually active around ovulation time), hormonal derangements, local pH changes as response to hormonal cycle, etc. The exact cause can be made out after examination and further evaluation. Visit your doctor/gynecologist at the earliest for thorough and careful examination, vaginal or vulval swab/smear test, blood & hormonal work-up to identify any underlying cause. Treatment as indicated (based on examination findings and investigations results) would be started to help you. If pregnancy is suspected, go ahead with getting thorough examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately). Consider being in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Drink plenty of water. Take adequate rest. If infective cause is suspected or detected, get your partner also treated simultaneously to prevent chances of re-infection, and avoid having intercourse while being on treatment. Avoid vaginal douching, or use of harsh soap or perfumes in the area. Use loose cotton undergarments and avoid use of tight fitting clothes. Keep area clean and dry. Avoid sweat accumulation in the area.
Take care.