I am not sure if its free but I go to the Dental Clinic in Balbriggan and I see James, he looked after me while I was pregnant and had bleeding gums etc and he is really sweet (I have a fear of dentists and he really calms me down)
I would suggest you give them a call and find out what you are entitled to. I think it used to be free but it also used to be free with a medical card and thats all changed now, with the new government guidelines.
they are at 01-8417344 – even if thats not close to you, the receptionists are very helpful and will be able to advise you and possibly recommend someone you can see near to where you live.
Good luck and congrats on your pregnancy!