No, no advice really. We are all different. There is nothing wrong with not having kids, or not wanting them.
I do feel strongly that we can't 'have it all' though, and there are always sacrifice. For apart from a very few women, 'having it all' is a myth and a con. Building a good career, having a happy relationship, having children and a good family life - not many people do this. And those of us that don't are not failures. It's tough for women.
I have kids and they are the best thing in my life by miles. I don't regret them. But I didn't work for years and my marriage failed anyway. Now I am trying to sort myself out a career at 42. It's always a compromise and I don't feel I necessarily 'got it right'.
You could always get your FSH levels checked. It's a crude measure of fertility and you might find that if you know more about 'how long you've got' it might focus your mind on how important it is to you.
But it's a personal decision and important to work out if you want kids for yourself or that you feel you ought to want them because society and the Daily Mail tells you that.
There is nothing wrong with not having kids and you can have a fantastic life without them, and a great relationship with children that are not yours - your friends' kids, nieces and nephews, godchildren.
:)