Pregnancy/abortion

My boyfriend and I been together for 4 years almost and have 2 beautiful girls ages 4 and 2. Well I recently just found out I’m pregnant and I’m about 5 weeks, and I’m honestly not ready for another baby I’ve been really sad about it and cannot sleep. As much as I hate to say this I thought about abortion but I’m sure if I take that route my boyfriend will be super mad at me but I really just cannot handle having another baby right now. I’m happy with just my 2 girls! I’m just lost and confused on what I want to do because I know my boyfriend should have a say also.