The swine flu jab, is it yearly?

I first had the swine flu jab 16months ago due to me being an Asthmatic and in June I became pregnant, Im currently 29wks pregnant and when I went to my 3 months visit at the hospital sept and I was told swine flu is every 3 years so I didnt need another jab and now Im reading the seasonal and swine flu are togather now and that it offered yearly? what is true was I supposed to get the seasonal/swine flu jab again??