My little brother dropped some water (less than a teaspoon) on the touchpad, so he swiped it, and now it's not behaving properly. It's movement isn't fluid, it often gets stuck while and tapping doesn't even work.
The right and left mouse buttons still work.
I've even tried using different versions of Synaptic drivers, to confirm that it isn't a software issue.
I read online that it would just get fixed by itself after a few days, but it's been more than 3 days, and it's still not fixed.
I just wanted to provide an update, to help anyone with a similar issue.
My mousepad is working perfectly fine now. Since it stopped working, I've been using a mouse, and yesterday when I checked it, it worked fine, it's working fine too.
It took about a week for it to start working again.