My hard palate is swollen and painful just behind rougae area after i was drinking a juice with a narrow straw forcefully what shoud i do ?

If that is all: If that is all you did then keep it clean with some salt water rinses and it should resolve. If it is very sore then get some anesthetic/antiseptic rinse otc and use that. If it gets worse or does not resolve in a few days, see a dentist for evaluation.

Clean and monitor: If you noticed it right after the drink then it is more likely irritation from way you were drinking possibly aggravated by acids in the juice. Keep the area clean and rinse with salt water to aid in reducing inflammation. If it doesn't resolve or improve significantly then see your dentist soon. And don't suck down the juice so hard next time, enjoy it instead. Best of luck.

"Pizza Palate": Pizza and other hot foods or liquids (coffee) also can burn the roof of your mouth. If the soreness persist beyond one week, call your dentist for evaluation.