I found a 1/2 of an oblong blue pill & on that 1/2 is the #44. There aparently is more numbers or letters for the other 1/2 but I don't know what it is. I am concerned since I found it in my sons pocket. The other side of the 1/2 pill is a 0, w/ obviously more letters or numbers in front of it aslo. Help! What is my son taking that I don't know about?! He is only 17!