first off, i dont think you can atribute the relief in symptoms to the meds because you would bairly be feeling the effects after only one week. I'd think they went away on their own. Being unable to concentrate and moodiness are signs of depression/anxiety. Why did you go off the meds? I have found in the past when i try to go off mine, i do get cranky, and forgetfull. Not sure if you'd have any withdrawls. For future reference, try to go off slowly. If it is your body adjusting to stopping the meds, i'd think you should be in the clear real soon. If the "side effects" continue, you might want to re evaluate the reason you started them in the first place, and the reason you went off them, and reconsider taking them as perscribed. There are some drawbacks to taking antidepressants, but for some off us, there are no other options
This is not an area of expertise. I would suggest speaking with the physician who prescribed the medication for more clarification.