Just after an opinion as I know you can't tell me what's the right thing to do as you would need a crystal ball 
To cut a long story short.
I had my DD at 35 weeks due to severe pre eclampsia 6 years ago. It was an awful experience and one that took a long time to get over.
I'm slightly overweight and 39 years old and can't shake the feeling that if I didn't try for another I would regret it forever.
DD was very small at 5lbs but thankfully very strong and only needed a heat pad for 2 days.
Im am only child myself and struggled with that and feel like I'm depriving my own DD. But even if I do have another there would be a large age gap and no guarantee they would get on.
Consultants are vague with their opinion on whether PE would happen again so I just feel lost.
Would be grateful for your thoughts on whether you would try or just be grateful that I was lucky enough to have DD x