Thanks so much for the advice girls. The cyst has been feeling a lot better the last couple of days anyhow. I will try some tea-tree oil and see if that helps even more.

I figure if it's not causing me too much pain and won't interfer with labour (and will only if it becomes a serious infection) then it's best to avoid the antibiotics-from some of your experiences it doesn't sound like the best one! The obstetrician even said that during labour if i was to have an epidural she can drain it then?! I just hope she doesn't mind if i don't take her advice...at the end of the day, it's my body and my baby!