the worst news of my life

I'm 20 years old, I've been dating my SO for over almost three years now. We both went to school in Maryland and just finished our sophomore year of college. I found out I was pregnant the last week of classes.... I was terrified. I told my parents and his, and they were both supportive at first. Once I decided to keep the baby my parents became less supportive. I decided to go home this weekend for Mother's Day (my semester is over with my SO's is not he's almost done). My parents live in Massachusetts and my SO's parents use to live in New Hampshire but recently moved to Texas. This weekend has been utterly awful. I thought that if I came home it would help the situation but I was wrong. The first night my dad and I talked about options on school and where to stay and what financial support they could give. That gave me hope that they were going to come around, although I knew they still were not okay with my keeping and raising the baby. Today, Mother's Day, started out awfully. First, my brother and his very recent wife are expecting in October.... being around them is hard knowing my parents love and support them and their baby. And do not with me and my baby. Anyways, my parents just had a conversation with me that turned into yelling and them not supporting me, resenting me, calling me childish for wanting to keep the baby. I snapped. I kept trying to make things work because I want to be close to my parents and have them near me while we go through this. But that was it. my mom told me that she wants to make an appointment to get an abortion this week and I'm going, and my dad did tel her no obviously. I just can't do this anymore. I want this baby. And I will never forgive myself or my parents if they guilted me into having an abortion. But now, the plan is that I will drive back to Maryland and stay with my SO until he finishes exams... and then we will drive out to Texas and stay there this summer. I'm really upset and emotional and feel like I'm loosing everything I've ever known. Family is huge to me and I can't believe I'm loosing mine... I'm heartbroken. My parents say they're heartbroken. I love my parents and I know they are just worried about my future and my SO's. But we are 20 and 21, not in high school, halfway done with college. I feel like this is doable... but now I'm second guessing myself...