Why am I now having seizures

I began my Sunday morning at 7:15 a.m. by doing my weight exercises, both arm and leg. I then preceded to do my stretching. At 8:10 I then took my shower and preceded to get myself ready to go to church. once I was ready, I then went out into the kitchen to eat peanut butter on two slices of my mothers homemade brown bread toasted. At 9:00 I then went to my bathroom to brush my teeth. At 9:20 while I was waiting for my mother to go to church, I did some laughing by singing the laughter song. I then let out a few good chuckles of my own. Hopefully, I will have learned the laughing song Before the end of the month of April. That is my goal. At 9:25 I then did my speech and breathing exercises. I then used my inhaler before leaving with my mother to go pick up my grandmother. We then went to church. After mass we had brought my grandmother back to the Pierce House so she could eat her dinner. We had arrived home at 11:50. I had never got out of the car. My father then jumped in the drivers seat and brought me to the shop to give me an haircut. My father then brought me home. After eating some lunch, I then lied down to rest. I had slept from 1:15-3:15. My sister had called. So we spoke briefly before I then sat down to watch the movie sleeping with the enemy. At 5:30 I then went to the kitchen to eat pea soup. I was talking to my mother during dinner, about the seizure I had yesterday as I was walking out of the movie theater. The second one with in a month. She was letting me know that it probably the amitriptyline. This is the medication the doctor had put me on for my headaches. It is doing wonders for my head aches of which now I have none. but one of the side effects is that it may cause seizures to some patients. Why not, I am one of those people.I then finished watching the movie before sitting down to blog.