Get the shot! lol I did for several years. I was allergic to EVERYTHING I should have lived in a bubble and then it still probably wouldn't have been allergin free! Now it is as if I was never allergic to anything in my life! They really do allow for a normal life, and they only take about 15 minutes out of your week.
When I was a baby my dad refused to get rid of the cat so my mom gave him a bath once a week and she would add a little bit of downy (fabric softner) to the water. I never had a problem and the cat splet with my most of my life.