hahaha....you might have more answers if you find the right forum man. Let me answer your question based on my knowledge.
Yes. It's possible. But again, it depends on your watch brand. May I know what's the brand?
Some watch shops do sell bracelets for watches. You need to know your size of your strap also(normally it comes with 22, 24, 26mm width). Best is to bring the watch to the watch shop and ask.