Please help. i can't stop obsessive worry about getting a disease like ms. i analyze every symptom over research & worry myself sick. what do i do?

Anxiety/OCD: It sounds as if you have underlying anxiety and maybe even some Obsessive compulsive issues/disorder (OCD). If your problem is affecting your every day life and daily activities it would be best for you to speak with your Doctor about seeing a Psychiatrist and or at the least trying some first line medications that may benefit your condition. Best wishes.

Obsessiveness: First, I recommend that you see your PCP for a general check up. Next, I recommend that you see a therapist and/or Psychiatrist about these obsessive thoughts. I hope this helps.

Anxiety: Get general check up with your doctor and discuss options, seeing psychiatrist , trying counselling or taking medications.