This is NOT love. This is NOT healthy — for either of you or your daughter. Do you really want to spend your life like this? Do you really want your daughter to grow up thinking this is what a loving, committed relationship looks like?
See a lawyer to find out what your rights are regarding custody of your daughter.
Get yourself into counseling — both to help you separate from this toxic relationship and to learn how to express anger appropriately. Insist that your boyfriend do the same.
If you both take counseling seriously and make major changes in how you deal with each other and with anger, then just maybe (and I mean maybe) you can try again. But don’t spend time together until your counselors think it’s safe and healthy to do so.
I wish you well.