hey nicolina! cool name.
i think the good news that comes with your bad news is that you have 3 lesions. for ms diagnosis i think they have to find 9 or 10 lesions in your brain. my neuro and the mri tech searched long and hard, and found em - plus two BIGGIES on my spinal cord. also if your doctor is talking about opting for meds, that is pretty positive too. this could be a one off.
anyway if you're anything like me, just read read read. at first it's kind of annoying that there are no hard and fast definitions, knowledge, etc, just a bunch of medical educated guesses! but it gets better as you get to understand more about it. you can definitely find information you can act on, for both prevention and healing. i think a few of us here are pretty hooked on pubmed, it's good stuff.