Hi N.,
I am a 48 year old mother of two girls 7 and 8. I will say my pregnancies were very normal. I did have amniocentesis with both, but, it was done so late in the pregnancy that the result would not have affected whether or not I proceeded with the pregnancy. You have to realize that in your 40's each year increases the risk of chromosomal abnormalities in the baby greatly (having a baby at 44 or 45 will be much more risky than having a baby at 40 or 41) Your also have to decide in advance if you will have amniocentesis or not (it will be greatly recommended) and what you will do if it turns out your baby does suffer from some chromosomal disorder such as Down's syndrome. Down's syndrome babies will require a life-time of care. What is your plan if when you become unable to care for them?
I know it sounds like I'm being pessimistic, but it's important to fully understand your choices.
As far as parenting is concerned. I LOVE it!! I can't think of anything else I'd rather be doing. My girls bring undescribable joy, fun, laughter and love to my life. I have two older children from a previous marriage who are 22 and 29 and I think I'm a far more patient and mindful parent because I am aware of how quickly time goes by and my priorities are different. However, I do feel alot older at 48 then I did at 40, and despite walking regularly and trying to eat healthy, I look it too.
I definately am one of the oldest mom's in the elementary school my children attend, (are the teachers alot younger than they used to be!?) but I think I get more respect than I used to, so there's a trade off.
If you do decided to proceed, I would not wait much longer, or you may find the decision will be made for you by decreasing fertility. You could also explore other options, (donor egg, adoption) Best Wishes
J. L.