I think theres something wrong with me?

Four days ago i had my last session with my shrink (insurance ran out) and now i cant stop stalking her on facebookand looking at her pictures..i even know that she has a tattoo on her back and the only reason i know this was by going on her sisters friends facebook.... Im just so in love with her!!! The first time i saw her..she blew my breath away...shes so smart and beautiful and im so depressed cause i cant have her.. I cant get her out of my head.. I cant do anything but think abut her and replaying our sessions in my head like some kind of movie im rewatching over and over again... I cant function like a normal human being...WHAT SHOULD I DO?! Do i have ocd or something cause i always seem to get like this with older women...actually no shes different.. I cant imagine liking anyone else as much as her :(