Hi there.
I found I was unexpectedly pregnant with what turned out to be dd2 after my mirena coil failed. When I found out, dd1 was 3 and ds 15 months - she was born when dd1 was 2 months short of 4, and ds 22 months.
I had had 2 ghastly pregnancies, ante-natal and postnatal depression (which had hospitalised me at one point) and physical problems with kidney stones in 2nd, and this became worse in this last pregnancy.
I was in hospital 17 times in the 18 months of the pregnancy and year afterwards. My kidneys are now OK but I had an operation during the pregnancy and 2 afterwards in the 6 months after she was born.
I was seriously depressed after she was born and did manage to stay out of hospital, but had some serious therapy and medication to deal with it.
While dh and I are in a very good place now, for the first couple of years after she was born we struggled and fought a lot - things were hard. He had really not wanted 3, but termination was never an option for us once I was pregnant.
We had a very hard time of it.
BUT ---
dd2 is now 5, will be 6 in November. She's cuddled up beside me at the moment, watching a dvd (with suspected Swine Flu!), just started into primary 2 at school, is bright, gorgeous, cheerful, loving, fantastic.
If you told me now what I would have to go through to have her, how hard it would be, then I would still say yes!
Not sure if this is helpful. But it is my experience!