AynaDee, it can't hurt to get some extra magnesium, as it is a needed element which is often low in many people. A pcp told me that the majority of Americans now test low in magnesium. He didn't know why this was, other than possible nutrient deficiency in our food.
I know you didn't have the abdominal spasm, just noted it in my case as an example of how spasticity could cause night-time severe reactions. I had a weakness in that area due to having Porphyria; it is almost completely gone now.
I hope your night condition goes away too!