Welcome to our little corner of the world, Maroc..
I'm not a Doc but, I hereby deem you as most likely having MS or something similar.
Some Neuros wait to give a formal DX of MS, until 16 zillion tests are positive....but, that's just it, there is no positive test for MS.
Hang in there and hang with us. We are helping each other through this carp, one day at a time. In the meantime, make sure your Neuro or PCP properly treats your symptoms.
Again, Welcome and I hope you like it here.