new nocturnal seizures

please help me, I truly believe I am having seizures in my sleep. for the past year I have been having similar episodes exclusively during sleep. I usually know when an episode is going to occur because I always feel an excessive sudden wave of sleepiness take over, then, shortly after falling asleep, while "sleeping," I hear a loud buzzing wave like sound followed by twitching in my whole body. some times I feel the twitching begin in just my face, then eventually end up to feeling it in my whole body. each "seizure" lasts no longer than 1 minute, I attempt to wake myself up because I know what is happening is not right, but before I know it my eyes roll back in my head and I fall back asleep and having another "seizure" sometimes I will have up to 5 of these mini "seizures" before I am able to fully wake up. while the seizures are happening I can remember feeling scared and in my head telling myself I need to wake up so they will stop, but due to the excessive sleepiness I keep falling back asleep several times and have repeated brief seizures. Once I finally wake up, the seizures stop and I often feel fatigued that day and sometimes a headache. These only happen during sleep, especially during day time naps when I am sleepiest. They happen more often so when I am extremely fatigued from lack of sleep. I am a nurse and these began when I was working the night shift and extremely sleep deprived and stressed. do these sound like seizures? I am concerned because it has happened so many times, exactly the same every time. I am torn between this being some type of sleep paralysis or seizure.