32 wks pregnant and have a cough that won't go away? Anyone else experience this? What to do?

I am not sick at all- just have a hacking cough. Sounds like a smoker's cough to me. lol. Has anyone else experienced this during pregnancy- a cough they just can't get rid of. I've had it for 2 wks now, at first I got a little congested, but that was gone in a few days. Is this something that can happen in pregnancy? Should I be worried? Is there anything I can do to get rid of it?