Unsupportive SO

My boyfriend and I have been together for 5 years almost 6. I had a stillborn child 2 months ago. He keeps telling me that I'm dictating his life forever if I decide to keep the baby I just found out I was pregnant with about 3 hours ago. He told me that why would we go through another 9 months and end up with another stillborn. Told me we shouldn't have a baby and I should get an abortion. This breaks my heart because he was so excited for the last baby and now he's just so negative and making me feel horrible telling me it's my fault I got pregnant again etc. what should I do? Don't just tell me leave him I want actual advise. Thank you