Life has took a crazy turn

I have a son who is almost 2 and he is my world. His dad and I split 6 months ago. I started speaking to a guy and 4 weeks ago we met up. I made it clear i wasnt on contraception. We had sex multiple times on the first night; it was very heated and we didnt use protection or pull out method majority of the times. Afterwards, I checked my calendar and I was 2-3 days before ovulation. We've spent every weekend together since and really like each other.. my period is 3 days late today and i have felt dizzy, nausea and sore boobs.. took a test today and it confirmed im pregnant. The first time meeting a man and I get pregnant!! Im almost 27 and he is 31. This is really not ideal and I dont think I can have this baby. He was in shock and hasnt really spoke since i told him 2 hours ago but said hes coming down tomorrow (he lives 2 hours away). I am a single mother, professional woman, own my own home and usually NEVER take any risks in life so this has REALLY thrown me. I really cant have this baby. I really dont know how to manage this?! Any advice on abortions and how to have this discussion with him is very much appreciated!!