Can anyone help with my stomach ache?!

if its that low its not your stomach which you should be thankful for, that stuff it really serious, periods normally arnt "sharp" to be honest it sounds like you have gas pressure which i know sound like you have to pass gass er something gross but its really not. theres air in you trying to get out thats being compressed in you. you prob notice it more when your trying to sleep or sitting up. with no stores opened id say worm bath and try to sleep a little more than normal. worm milk tents to help with sleep and pressure.
it sounds painful i hope your ok
** What Zack said its exactly what you should do before and after the bath it would make a huge difference

Sounds like a Gas-Bubble to me.. Lay down flat on the ground and lay completely flat, lift up your left leg and push it as hard as you can against your chest, same with your right, and then both at the same time, continue this and it should solve your problem.

These are some possible causes:
Bad food = stomach problem, take pepto and or probiotics or at least some coke or ginger ale
Bladder or Urinary infection can cause pain that high up too = see your doctor and get a culture and drink cranberry juice
Cramps = take motrin