Shift key always enabled, and track pad acting strange

I spilled liquid on the keyboard area of my Macbook. I turned it off and let it sit in rice for three days. After powering back on it booted into safe mode, but they keyboard is typing in all capitals and the number and symbol keys always appear as if the shift key is held down. I plugged in an external keyboard and it began typing normally, leading me to believe that all I would need to do is the upper case replacement. However I just plugged an external mouse in and the left click function does not seem to work, i.e. I can't seem to select individual text in documents or web pages, and clicking icons does not do anything, I have to right click and then select "open" to make any of them run. Bottom line I can't select anything with the trackpad or the external mouse. Does this mean its more than a problem with the hardware of the trackpad and upper case and a problem with internal components? Should I take it to a mac store and see what they think?