I have multiple sclerosis. and showing possible symptoms of covid. can i go for a test to make sure and should i be worried ?

Recommendations: Yes, if there is concern, by all means, get a PCR, which is more accurate than rapid. If you are receiving ongoing disease modifying therapy for your MS, contact your neurologist, as some of these DMT's might best be switched if immune mechanisms could cause risk. This is a judgement call, and is based upon a balance of factors, but get all your doctors on board now.