Am I making a mountain out of a molehill?

Hello, I am looking for some much needed advice please. I am not sure if I am just making a mountain out of a molehill. In 2009 whilst on holiday in the Uk I lost the sight in both my eyes and diagnosed with Optic Neuritis. I spent the whole holiday in hospital being pumped by steroids. Thankfully I regained my sight but the consultant said it was not “nil that i had MS”. I transfered to a hospital nearer home and was told it was a severe viral infection and not MS. Roll on 15 years and no other significant symptpms other than feeling tired all the time, getting shingles due to stress and tingling in my shoulder along with having issues with IBS. I am at an age that other things are happening like brain fog and im putting it down to that. I did mention it to my dr last week but was told that it definitely would not be MS. I am due to get bloods taken for the usual things, which have always come back negative. I just have this nagging feeling that there is something more to the way i am feeling and i have the hospital consultants words ringing in my head. What should my next steps be? Do i insist that the dr’s to look in to it a bit more? Or do i just carry on as usual because the Dr is right and it wont be MS? Thank you for reading.