Mom of 2 getting an abortion

Hi, I found out I was pregnant the day after Christmas, and planned parenthood took forever to get me in, my abortion is scheduled for march 9th and 10th bc it’s a surgical procedure. I’m feeling so sad about it. But I’m not in a good relationship, I’m not happy, and I’m planning on leaving. I don’t want to have to raise 3 babies by myself cause I currently have a 2&3 year old. But I’m feeling sooo much guilt but I know this is the right decision. I had a iud that shifted so I didn’t want to be pregnant. I’m just having such a hard time controlling my emotions 😭any words of encouragement?