Still Waiting

So far nothing has happened.  I water my cantaloupe seeds everyday and even put them outside during the day and bring them in at night to protect them from the cold.  I don't understand why they haven't sprouted yet.  I'm starting tho think that maybe i should plant a back up plant just in case they never sprout.  i even did research on why they might not be growing but could find nothing.  Maybe i buried them to deep and its just taking the sprout longer to make it to the surface.  I wont give up on them just yet but i will be planting a different kind of seed just in case.