I've been taking 50mg of Levothyroxine for about 3/4 months. I do...

I've been taking 50mg of Levothyroxine for about 3/4 months. I don't feel an awful lot better, apart from the fact that I'm not quite as tired. The main symptons I have experienced are... funny feelings around the neck area ( hard to explain, but it makes my hair irriate me) and, an incredible pressure around my forehead. which is not a pain, but just like someone has stuck a load of cellotape on my forehead.. very uncomfortable indeed. Has anyone else had this weird symptons?