Please consider seeing a Neurologist as soon as you can. It might be something simple to treat, but no matter what it is, don't give it any extra time until a Neurologist goes over your symptoms.
I was lucky - my symptoms that quickly involved my entire body turned out to be Essential Tremors, now completely controlled through medication. However, I heard things like brain tumor to epileptic seizures to MS when episodes were seen by GPs. Thank heavens for the one who immediately named the neurologist I should see, even offering to make my appt!
Many folks here coukd probably think of many different things. But you need a Dr who can diagnose you with testing involved. And, he can then get you on any treatmebt you might need. Sincerely, the best of luck to you.