Anyone use frozen a sperm for iui?

Today I had my baseline appointment to start the process for our first

IUI

. Long story short I got diagnosed with breast cancer in 2019 at 27 years old and I’m now in remission. We were given the green light 6 months post chemo to start trying. I was in a menopause for 6 months but came out of it two months after treatment. I’ve had every testing done under the sun and all fertility wise is well. My husband had a SA and it came back fine.

My husband works on a ship and is gone for months at a time so my dr suggested he freeze his sperm and we would proceed with the

IUI

while he’s away. Has anyone else used frozen sperm and had success?

When I had my ultrasound today she said my ovaries looked great and I had 17 follicles. Is that a normal amount? I go this Sunday to have my second ultrasound to check everything. I just started letrozole today and will be getting the trigger shot and progesterone suppositories.

Any tips would be greatly appreciated!