too embarrased to take gymnastics?

i'm pursuing myself to take a beginer's adult gymnastics course at my university...it is a few months in duration 2 times a week for a few hours. i am 6 feet and 1 inches 200 lbs. male with 16-18 % body fat

i am capable of doing 4-8 pullups depending on my grip...but i'm kinda afraid i might not be in shape for gymnastics....also the fact that i'm a dude and i'm kinda bigger than the average person taking gymnastics...makes me feel like i'm gonno get weird looks..lol..

can you give me some idea of how difficult the beginners course is..and how accepting it is for me to take gymnasitcs? because i really like gymnastics and admire gymnasts....and have always wanted to do gymnasics...

sorry for too much ranting..lol