I gave jab first time last winter as I was preggers n swine flu scare was going around. Never gave it b4 even tho GP kept inviting me 2. I hear if u take it once, U'll have to take it forever or u really do get severe flu and I didn't like depending on it! Gave mine other day. Pink u shud take it now that ur preggers b4 they ran out of jab. Last yr my GP had to track one down 4 me as supplies had stopped!