Try taking it to a local bicycle shop and asking them to take a look. I have to patch my stroller tires from time to time (just like my bicycle tires) because the tube will get holes for one reason or another (pinch flats, thorns, etc). The bicycle shop can help you figure out what is wrong, and show you how to make the appropriate fix. A patch kit costs less than $5 and labor will be inexpensive on that as well, maybe $10 max--they might do it for free even.
Long enough have you dream'd contemptible dreams,
Now I wash the gum from your eyes,
You must habit yourself to the dazzle of the light and of every moment of your life.
-from Song of Myself, Walt Whitman