The problem I see here PinkBlossom22 is one of control over ones future - or in the mans case - complete lack of it.
The making of a baby - especially an unplanned baby, is a joint venture (assuming contraception has been discussed and used as directed and no duplicity has occurred) .
However the continuance of that pregnancy and the decision to become a parent is the sole decision of the woman. As it should be. You have the right to decide what happens to your body.
The man doesn't have a 'say' in the decision about what you choose. He can have input and it is important he is honest about his feelings.
It is extremely unwise to expect a man to be accepting of having fatherhood thrust upon him if it wasn't planned and is not wanted. If it is your decision to continue a pregnancy that your partner does not want - then you do that , it's your right .
However be absolutely sure you are prepared to lose the relationship and be a lone parent from the get go.
Do not make a decision on the hope and expectation 'he will come round' , relationships where one person makes these kind of life choices for the other partner against their wishes - have very very little chance of continuing. His only obligation is financial. (and don't rely on that either - it's far from easy)
If you make the choice to go this alone - then I wish you congratulations. 