Firstly thank you to everyone who replied with constructive comments and sensitivity. I have a very happy ending to the dilemma.
Over Christmas I had several very bad bleeds and with it being Christmas and the general state of the NHS I didn't get a scan until yesterday; it was the opinion of every medical professional that this would be an assessment scan to figure out if I needed a D+C.
It turned out that there is, in fact, a 12+4 baby in there wriggling away to its heart's content!
DP burst out laughing after the initial shock and explanation as to why I keep bleeding. We left the ultrasound room to go and talk to the nurse who was equally as shocked as we were and DP just started crying and told me he'd been doing a lot of thinking this past couple of weeks and that if there was anyone that had ever been in his life that he would want a baby with its me.
He's excited - a little worried since there is a potential problem - but was telling everyone we went past who would listen that he was going to be a dad.
We went straight to his parent's and grandparents to tell them the news - his mother just broke down because she'd resigned herself to him never having children. All his friends know, he's facebooked it.
I've got my man back!!!