Thank you for your question
My name is ***** ***** I was about to add to the answer my colleague previously gave you.
It is true that you have no rights whatsoever until the child is born.
Even then you cannot insist on being there when the child is Registered or named.
HOWEVER the law says that a child is entitled to contact with BOTH parents and the courts will enforce this if necessary.
Whilst the baby is tiny then it will be little and often - a couple of hours twice a week maybe - but as the baby grows so should the time you spend with the child until by the end of the years a whole day once a week - and build on from there
If she will not agree then you can apply to the court for a Child Arrangement Order
In terms of having Parental Responsibility for the child if your ex will not agree to registering the birth with you, or signing a Parental Responsibility agreement then again you can apply to the court who will grant it
IF you want your name on the birth certificate no matter what (and will pay for the DNA report) then there are separate Court Proceedings you can use.
The starting point is to try and discuss matters with your ex using family Mediation
If that fails then after the baby is born to can make the court application
I hope that this is of assistance - please ask if you need further details