I can help, but you'll pay more than you want. I'm tall also and have to wear a 36-37 inseam pant if I don't want to look like I'm expecting a flood, as I'm all legs! Gap is great, but they don't have ultra tall maternity pants only tall

. You can go to
The Tall Girl Shop United States. This is where I got my one pair of maternity jeans. I also bought a pair of maternity work pants, that I wear every day from
RG Maternity » Looking for tall maternity clothes?. I wish I could buy more pants to increase my options when I stare into my closest every day, but it just got too expensive. Hope this helps!!