How do you think I ended up with so many kids... lol.
Yes, your biological clock still ticks even after you've had children & sometimes even stronger.
After giving birth to my 6th child & having my tubes tied (because my man & I agreed that 8 kids is enough) * he had 2 from a previous relationship...
My clock still ticks sometimes. There are days when I think maybe I would have liked to have another baby (or a dozen more).. I'm one of those women who loved being pregnant & I just adore babies & family.
My relatives used to joke "don't let her hold the baby - she'll want another one!"
I'm rambling. Anyway, it's a natural part of being female (and/or human). Logically I know I have enough children. It doesn't stop the natural instinct of wanting more. I just have to remind myself that I have enough (more than enough by some people's standards) and that it's alright because eventually I'll have grandkids. & like sweetsusieg said: after menapause the urge will go away.
sorry for being so long winded.