You need to have tests done to find out whats up. Probably by a neurologist.
You need to go to the ER if the doctor doesn't know what's going on. They should done a lot of blood work and some CT scans/MRI, other tests.
Check Vitamin and mineral levels also...vitamin D, magnesium, potassium, vitamin B12, iron/ferritin
OMG! The doctor sent you home? Really? Did you go to the ER? Obviously something is going on here. Go to a different doctor. This is NOT normal. Maybe you had a seizure. Regardless, please don't wait.