If it is on your parents' insurance or anything like that they will get the bills even if you pay them. I'm in the US but sure enough Planned Parenthood is global:
https://www.ifpa.ie/
They offer counseling, care, birth control. often financial help. If 18 is the age of emancipation in Ireland, like here, then you are an adult and your parents need not be involved.
I will gently suggest one aspect of life: One step towards becoming a real adult is standing before your parents and telling them about your adult decisions and standing by them. This happens when and if a young person is ready for it.