I have been trying to conceive for a long time now 2+ years using no birth control for over 3 years

I have been trying to conceive for a long time now 2+ years using no birth control for over 3 years. I finally fell pregnant last dec and had a missed miscarriage in feb . I was devastated after trying for so long my worry was how long will it take me to fall pregnant again. I saw a fertility specialist who set me up to start ivf. So I was due to start my ivf in dec and my nov period never came. I finally got my positive again. I can't stop crying I feel like the luckiest woman alive . My advice to anyone would be never ever give up some it just takes longer and no matter how hard it is waiting it just makes it even more special .