Help!

I'm at my wit's end. I usually only read on forums; this is the first time in my life that I'm posting a message myself.
I'll ultimately have to make my own choices, but I'm hoping for some advice or tips.

My boyfriend and I (he's 24, I'm 27) have known since last Wednesday that we're pregnant. I'm at 5 weeks now (very early, so still quite fresh). We consciously decided to stop the pill because we both thought it would take another half a year to a year, given that I'd been on the pill for 12 years. However, I stopped a month ago and got pregnant right away! We haven't seen each other all weekend (though we did talk), but since today we've had the biggest fight. He's packed his things and we're both taking some time to think. I don't know anymore if I'm truly happy with him. His way of reacting, belittling me, bossing me around, treating me like a dog, yelling at me, being lazy and doing nothing around the house, etc., etc., etc. I realize that these things were also happening before I was pregnant, but I always had good hope that things would get better. But it seems like it's only now that it all becomes clear to me—that it's not healthy how he treats me, how he's in our relationship, and how he flips out over the smallest things (as if he's pregnant and suffering from hormones). I also spoke with my parents for the first time today, and they are absolutely shocked. My best friend and little sister already knew longer ago that things were going wrong. They're all saying "STOP the relationship, it's not good for you and not good for the baby" (especially because it's still so early). I'm at my wit's end. He went over a line today, which means my parents etc. don't accept him or even want to see him anymore. I don't know what to do anymore. Continue with him? Or not? Continue the pregnancy... or not?

All this stress is also not good for the baby.