Lately I Have Some Pain In The Back Of My

lately I have some pain in the back of my head it's not like commheadace it's feel like pulling and pressure in inside and this last two weeks I ve even fainted a lot some time I scared to drive cause I feel like I'm going to pass out, and my left leg been hitting a lot feel like burning inside specially the back of my need onetime after I sit for awhile it's hard to start walking