How long did it take?

My husband and I recently started TTC. I was curious how long it took everyone to conceive on average? I am nervous because it took my mother ages to concieve all of us and we are very similar in our AF so I am worried that it will take a while for myself as well. We have only been trying for a month and I have been on birth control for about 10 years (IUD the last 4) so I don't know anything about my ovulation or even if I am regular or not. So, I just wanted some inspiration that it might not take as long as I am worried it will.