I've had it already, but I had the version without the adjuvant which is available in Canada for women in their first trimester. I also got the flu shot for the first time, the version for pregnant women.
I have autoimmune which puts me at greater risk of contracting any illness and my province was hit hard by H1N1. Last year I fell in love with jujitsu and had to stop, I got sick after every class, including catching staph (the first person ever at the facility as they sanitize and are extremely cautious).
It's a very personal decision and you have to do what you feel is right for you.