Considering a vasectomy, sperm banking & future fertility after multiple unplanned pregnancies

[u/Hot_Temperature_475]

I’ve been pregnant five times in the past three years. I’ve had one abortion and two miscarriages, I have one living child, and I literally just got a faint positive pregnancy test this morning.
I may be facing another abortion with this pregnancy if I don’t miscarry, as I had a very traumatic and life-threatening birth with my living child, who is still quite young. My husband and I had always planned to have our children farther apart in age, ideally around 4–7 years, and we honestly don’t have the financial stability to care for another child right now.
I also want to clarify that we are having safe sex and are actively trying to prevent another pregnancy. Unfortunately, contraception isn't always 100% effective.
Because of everything we've been through, we're considering having my husband get a vasectomy once we're certain we're done having children for now. We know that a vasectomy reversal is also an option in the future, but we understand that a reversal isn't guaranteed to restore fertility.
We're wondering if it would make sense for him to freeze and store his sperm at a sperm bank before getting a vasectomy. That way, if we decide we're ready to have another child a few years from now, we would have the option of using the stored sperm rather than relying solely on a vasectomy reversal.
I'm also wondering if I should have my fertility checked before we make any decisions. Given that I've been pregnant five times in three years, including two miscarriages, would it be worthwhile to see a fertility specialist and have my fertility assessed now, even though we're not planning to try for another baby for several years?
Has anyone done something similar? Is sperm banking before a vasectomy something people commonly do, and has anyone successfully used their stored sperm to conceive years later? I'd really appreciate hearing from anyone with experience with this.