Acid reflux while pregnant? why now?

I'm 25 weeks and NOW is the time for my body to throw the wonderful things that go with pregnancy at me...what things should i avoid if i have acid reflux and is it going to go away after i have the baby? Is there any reason it happens and especially now?
Update: my doctor has just gave me an O.T.C ant-acid and that was all, I just started it last night and it's working.
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