There may be someone in the hospital that is available to let you know about what's available. Possibly grants towards maternity clothing and other items, even prior to when baby is born. You may also get a cot from social welfare officer or health nurse or possibly a grant. Health nurse may provide baby powder - even if you plan on breastfeeding, take any baby food offered as you may be able to use it later.. it can certainly add up! For breastfeeding, there's usually tonnes of support when you're in the hospital and some hospitals have clinics that you can attend afterwards if you've any concerns or questions. You may be eligible for the lone parents allowance (or whatever it's called) and possibly family income supplement if you return to work. Think you have to work 20 hours or more per week for that and they take into account childcare costs etc. Do you have a medical card? Baby should be covered on that as well, even before name has been added - but double check that. If not, see if you may qualify.
There may also be a tax break avaiable if you are working - check with revenue on that.
During the pregnancy you can avail of free ante-natal care. Shared care with a GP may be available, but don't be pushed into that if it doesn't suit, as I don't think it's mandatory.
Best of luck with the pregnancy !