I Had A Venus Not (Arterial ) Hemmorage. (Cavernous Malformation)

I had a Venus not (Arterial ) Hemmorage.                     (Cavernous Malformation) 3 years ago. Went thru Occupational. & Physical Therapy for 4 months                                        
** 6 reccommended! And came back to work supposedlly on light duty which never went that way.                                                            
Symptons of short period of blindness and then optical rehabilitation.                                   Gate, out of sorts, vertigo, dizziness, etc..                    Taking Meclazine)     
6 month nuero appoint ments then 2 yearly appointments.                                                            
At 3rd year had CT scan and 1 day motility EEG. Same results were seen as in my original x rays.                                                             
Short periods of breaks in my synopasis.                                                            
I was placed on Keppra- passed out within 3hours. I was put on Zonisamide 100mg.Syptoms were the same dizziness. Focus iisues, tired, sleepy, etc..                                                            
Put on 50mg of Zonisamide sam symptoms. Basically not capeable of doing my job with a ptient safety issue.                                                            
Referred to an Eptimoligist. Plan was to take 50mg of Briviact for 1 week then 50mg. 2x's a day. I had same symptoms after I weekend of trialing this.                                                            
I am currently taking 50mg of Briviact which my body has growm to tolerate but still slight out of sorts feelings that come and go                                                            
for 1 - 1/2 hours once and a while.                                                            
Eptimologist states that 5omg of Briviact is what I need to take to help prevent another seizure.                                                            
I had a stroke. These 3 meds are for seizures.                                                            
With all this being said my questions are:                                                            
1. Isn't it normal to have irregularities after a Venus Hemmorage.                                                            
2. Do they put patients on seizure meds for prevention after having a Venus Hemmorage                                                            
3. Is the risk factor any better being on Briviact 1 or 2x's with 50mg.of having a future siezure.                                                            
4. It a good idea to get some out side opinons about this medication plan I have been put on before                                                            
starting the 2x's a day Briviact.                                                            
5. Is it neccesary to be taking these meds after 3 years of not taking them and feeling normal                                                            
6. Why am I being presibed these meds now.                                                            
7. How long can I expect my body to adjust to the extra 50mg of Briviact                                                            
* I have been approved for FMLA                                                            
** It is my understanding from the Eptimoligist that these meds are to be taken for prevention of a seizure.                                                            
                                                            
Your input on any or of these questions is greatly appreciated.