Is the sign for 'belly' the same as 'stomach'?
Yes, in everyday ASL, the sign of patting your abdomen twice is used interchangeably for both 'belly' and 'stomach'. The context of your sentence will make your exact meaning clear.
Can I use either hand to sign 'belly'?
Absolutely! You should generally use your dominant hand to pat your stomach. However, if your dominant hand is occupied, using your non-dominant hand is perfectly acceptable and will be easily understood.
How do I say 'stomachache'?
To sign 'stomachache', you would first sign 'belly' or 'stomach', and then sign 'hurt' (twisting your index fingers toward each other) right in front of your stomach area to show exactly where the pain is.