spilled a DROP of jello on my mac 3-4weeks ago?

so i am using a macpro with retina and about 3-4 weeks ago i was eating jello and i looked down at the keyboard and right in between the F and G key there was like a small drop of liquid from the liquid. i kind of froze for like 5 seconds and shut the computer down, disconnected the charger and ran to get a q-tip(those sticks with cotton at the ends) and gently swiped the liquid off. (This process took like a minute or two). I didn't use for a hour or two after that because the liquid was only one drop (to be precise like the size of a grain of rice). And it worked! But I am still really paranoid that corrosion might damage it or something. But I also kind of researched and read that macbook casings are really protective(?) and theres layers of film underneath the keyboard. So if the accident has been such a long ago (like a month ago) is it fine? And about 3 days ago I kind of sneezed (a quite big sneeze) and like a tiny tiny tiny tiny tiny (very tiny) drop landed like right next to my trackpad. I quickly wiped it off thinking that it might go in the machine but I am not sure if any of my spit did. Right now, I ran the hardware test and found an error about the battery not charging correctly but I ran the hardware test again and it said that everything was fine. Should I be worried? I literally get anxious everyday when I wake my computer up because I think that its gonna be broken or something. I am also not really close to an apple service center right now so is it necessary to get it checked up? (again this jello accident happened 1 month ago) and i have been using it everyday for the majority of the day...