Lucky for me, singing is one of my few natural talents.
Inherited the voice from a line of musicians and all that.
So initially, yes, when I was starting out singing. As a matter of fact this problem persisted all the way until I took the grade 8! But as I sang more I got more confident with singing. So I can happily do a concert now.
As long as I have enough preparation before hand.
For yall who are nervous about it, don't worry. Just remember singing is for your enjoyment, and passion, and the people you are performing in front of are random people just enjoying what you can do.