Um, @keeponandonandon , how about you read all of OP's replies on here before posting.
The MOTHER can't even be BOTHERED to be tested and refuses to be tested, to save her own son! Why is the gaslighting and blaming the OP, a 36 week pregnant vulnerable woman, ok, but you don't hold the 'mother' to the same standards? Since you clearly missed it, from the OP: The mum hasn't been tested, no.
WHY HASN'T THE MOTHER BEEN TESTED??? Why is she refusing to be tested? Why attack a woman who is 36 weeks pregnant, with a child at home, wanting her partner to be well enough to be with her, when the deadbeat mother can't be bothered to be tested, herself? How about she get tested first? Huh? How about that?
The mother also kept OP's partner out of her son's life out of spite, and only contacts him now she wants something (that she isn't prepared to give, herself): OP says:
DP was 18 when he was born, he was only with his ex for a few months and it wasn't even a “proper” relationship he said as he was going to uni a few months later. They apparently split up but his ex wanted to try long distance (even though he was Against it from the start), she told him she was pregnant and he basically said he'd support her but they weren't getting back together and she then told him she had an abortion and they didn't really have much contact after that as they had no mutual friends or anything.
What a real charmer of a mother she is. A real beauty, aint she? Yet you're attacking the OP for understandably, wanting her partner with her during the birth of their child, and with their child at home.