For the past month, I have been experiencing a numbing sensation in my abdomen and back (just below my breasts up to my underbelly). It seems like the whole area went asleep and has not waken up yet

It started during my holidays and at first I thought that not changing my bathing suit and leaving it to dry on my body could have caused this. Note that I did not have any other symptoms. A second thought was that since I stopped exercising my muscles are cooling down. However, I am not convinced by this either.
Can somebody advise whether this could be an early sign of MS?
Thank you very much in advance.
Artemia