Exercise Could Kill Me

I am trying to take baby steps towards an exercise program.  I am so out of shape it is ridiculous.  My thought is any exercise is better than no exercise.  After dinner, even though I was exhausted, I rode my bike to Tru Stories to see their "work in progress."  She is not just working on her corner.  She is Cuting Up Her Entire Yard.  Anyways.....took the little bike ride to her house.  It looks so good.  Even a short visit with my adorable grandchildren makes my day go from a 2 to a 8.  (It was just a short visit.) 
Riding my bike home.  I love my bike.  Especially, since I have my new basket.  Just happily riding my bike.  Enjoying Spring.  Loving my basket full of lilacs.  I park my bike next to the garage.  I was coming in too quickly.  Not sure what happened.  Next thing I knew, I was falling off the bike.  This could have been a very, very bad fall.  I put my hands against the brick on the house.  My face actually rubbed against the brick.  That could have been a head injury. 
I wish this was the point that I said I am buying a helmet.  Unfortunately, I am already having image issues.  I used to have some athletic ability.  My ego is very fragile right now.  As if the weight issue is not bad enough, I cannot possibly put on a bike helmet.
My plan is to continue to ride the bike.  I just need to be very careful.  These are wake-up calls for me.  Short rides.  More often, might be a good thing.