Can somebody give me advice on what having an abortion is like please?

So I found out 2 and a half weeks ago that I am pregnant ... it was unplanned, I am only 19 years old. I have Polysystic Ovaries but I don't have any of the symptom's of the syndrome and I have only been with my boyfriend for 6 months or so and was on the contraceptive pill for the first two months but then it wasn't working out for me so the doctor decided to take me of it, wait until my periods were regular again and then try me on a different pill, so I have fallen pregnant in between treatments within two cycles, so fertility clearly isn't a problem for me, but I have heard that PCOS is something that doesn't get better it only stabilises or gets worse so I am worried that if I have a medical abortion I will not be able to conceive again. Does anybody know what having a termination is like, and if so how did you feel afterwards? In my deepest heart of hearts I do agree with abortion so this is a mive decision for me, but on the other hand my boyfriend to be honest is not being supportive at all, saying that if I keep the baby then we are over but he will help me and come to scans and stuff but the last thing he wants is a family, he says he is not ready and has so much to do in his life before having children, which I do respect but he is not seeming to think of me and how I am feeling in all this. I love him but I did not think he would be like that at all, I'm devastated. My family and friends say that if I keep the baby they will all be there to support me, but I have just been offered a really good job opportunity in my career so If I kept the baby I would not be able to continue with my education. So I was just wondering if anybody who had been through and abortion could tell me how they felt afterwards and what it was like? I am looking into all my options at the moment so I am not saying I am going to get an abortion, I just need advice at this time?