Amanda - I so so sorry he is putting you through this! He really has no right, and is clearly a wanker. And he's panicking.... GOOD!!!
You've had fab advice here that I can't really improve on. You are pregnant..... don't think about him, he is irrelevant!! Just a sperm depositer in this situation.
You are handling this! Look at what you have already been through..... no wonder you have suffered from depression! But you are still alive and still fighting and still have a wonderful wee girl who's got a birthday party coming up.
...and if you do decide to keep the baby.... then you and your wee family also have the excitement of a new addition to the family to look forward to.
How do you get along with dd's Dad?