You're most welcome anytime!
Firstly, I just would like to remind you that I'm no wizard to give you some miracle cure, however I want you to know that whatever I tell you is coming from my own personal experience with others and is therefore 100% accurate.
I know I'm probably going to either sound like a physician or your mother here and you're most likely going to be very frustrated with hearing the same words repeated again. However please don't take the importance of these medications lightly. I can guarantee you that they will always work; please trust me. The only condition that must be met on your part would be to always keep to the dosage requirement everyday, and the key here is continuity. Remember the effects are very gradual and won't be shown straight away, therefore you must force yourself to think that YES they will work! I'm really not trying to create a fairy tale here, because I truly understand things are easier said than done, but all I want you to do is try your hardest and never give up.
It is also important to note that IF after at least 6 weeks they truly aren't effective (which may even be the current situation if you have been taking the correct dosage all along), please do see your doctor because there are literally so many types, and it can sometimes work a bit like trial and error, where only certain medications will work with different people.
I know I'm digressing completely here from the central subject of this thread. However I would like to highlight the main point I'm trying to make. I feel it's no point trying to retake if you would be subject to the same issue again. It is much more effective to tackle the root of the problem, and hence I strongly believe if you can take action to improve your concentration (with the help of medications that WILL be effective eventually), you are much more likely to succeed the second time round. Not only will increased concentration allow you to finish within the time frame in exams, but it will also help you now because it means you are able to do the
maximum amount of revision possible, so that thinking faster may be made possible.
Time is gold now and I repeat, it is extremely important to do whatever it takes to at least reduce the effect of the root problem immediately. This way you will have plenty of time to be fully prepared for your next exam. Listen, I know you CAN do this and please can you never doubt your intelligence because trust me I have a good instinct with finding what really lies behind the scenes.
Please listen to my advice and do hunt me down with questions. I'm more than happy to help. Wishing you the best of luck!