Wardy!
This comment was totally uncalled for....
"Also, and I apologise for being base, but you have asked for a male opinion. The thought of a hoovered out fetus coming out of your minny may put me off nookie in the future. "
Mr Boo has seen a 7lb 13 oz baby coming out of my minny, as you so lovingly put it, along with the blood and gore, and it hasnt put him off "nookie".
However, I do agree with him, sort of, I wouldn't tell him. Frankly, this is your decision and yours alone. Regardless of how he'd react if you did tell him, that child will always be your responsibility, and if he bu88ered off, it would be yours alone. Do you really need that on top of the child you already have?
I also have to say that I'm frankly disgusted that they have set your termination date so late, you'll be 14 weeks pregnant by then? Personally, I couldn't have a termination at that late stage, but that's just me.
Whatever you decide, it should be what is best for you AND the child you already have.