hello... just thought I would tell you my story.. and see if it helps any.
I have a 5yr old, a 3yr old, a 2yr old... and 7 week old twins.
When I fell pregnant with then #4.. I was scared. Dh wanted me to "think" about having a termination.. because we were in the process of building and he was doing Fly in/Fly out.. 4 weeks away.. 1 week home.
I thought hard about it for 2 weeks.. but could no bring myself to do it.. and dh stood by me.. it was my decision to make in the end.. and he would support my decision.
Started to sink in that we would have number 4 on the way.
Booked into to see my OB, and at 9 weeks I saw her for the first time. I took my 5 year old ds with me.. for bonding time... and what do you know.. there was twins.

Well my ob must have seen the look of horror on my face.. and asked if I would be ok to drive home... and I of course said yes...even though I wasn't.
Got in the car... and cried my eyes out the whole 40 mins home. Dh was fine and said that we would be alright etc.. not to stress.. and was quiet excited...not everyday.. you get to experience twins.
At 11 weeks and 1 day.. I stood up from the kitchen table to get ready for work.. and had a big gush of fluid and blood.. I thought I had misscarried.. I havent' experienced one before "thankgoodness".
I was bawling my eyes out. I had just gotten used to the idea of twins... and the thought of losing one or both.. broke my heart.
I had to wait like 20 hours before I could have a scan.... And.. there they both were.. happy and kicking away. I cried *onceeeeeee again* that they were fine.. and safe.
Here I am now... sleep drived.. lol.. but loving it. I couldn't imagine my life without them now. The twins have just slotted in nicely...The only ones being pains are the older 2 LOL.
My 3rd child was only 23 months.. so not even 2 when the twins were born. She loves them to pieces...Yes.. she wants to hold them and kiss them.. and can be a little rough. But you know what.. they wont break.. they might cry.. but hey.. that's what's good about mummies.. mummy cuddles.
What I am trying to say is.. you have survived having twins. Think of how easy 1 baby will be... 1 to feed.. 1 to settle etc. You will be able to spend more "quality time" with 1. Your twins will be old enough to help out a little aswell... ie get a nappy etc.
After all the problems you have had.. and how long it took you to fall pregnant in the first place... why take the chances of termination.. when it might wreck any chance for you to fall pregnant again.
Think of it as a blessing... this baby chose you and your dh.. to be it's parent's... it's here for a reason...
xxxx
Goodluck in deciding hun.