Male responsability in abortion

Hello. Looking for some views.
My GF and I recently got pregnant. We were very excited. We had discussed the topic before and both of us wanted to get married, have a large family, and were against abortion. We started seeing doctors, planning, and doing everything based on making these dreams comeing true. She became very nauseas (of course). She started feeling bad most of the day. Her emotions started going everywhere (9th week). She then stop talking to me. She told me she needed space. She then informed me she wanted an abortion (11th week). She told me that it was my responsibility to pay for it (being the male).
We had no insurance so I payed for all the doctor visits and test. I made arrangements for an engagement ring. I payed other financial obligation because I thought we were moving towards being a family. Now, is it my responsibility to pay for something I don't agree with? I offered her every other option. I would pay for her to be a surrogate mother. I offered to simply pay for it for her. I have had no say in anything. She became a completely different person and is now a very cold and callus person. She has said that it is her decision and I just have to deal. So is the male simply supposed to throw out the cash without any say? Is our responsibility to simply pay weather we are involved or not? I have no problem paying for everything and supporting the child. I do have a problem with being told certain facts only to have them change at a point and I then still need to be the responsible one and pay. I feel somewhat betrayed by everything that we talk about and focused on. So do I have to pay to kill a child I would gladly raise on my own? I am not looking to dodge any responsibility, but what say do I get?