What do I do if my alphanumeric password is no longer being accepted but my Touch ID still works fine ....

I have the iPhone 7.

Most of the time I use the Touch ID, which works fine, except when my fingers or the ID button are wet.

Occasionally, I have to use the Alphanumeric password, which has always worked.

Yesterday I noticed that the Alphanumeric password is not working. I tried a few times yesterday, then a couple of time this morning. It still isn’t working.

I know it sounds stupid to say this, but I might have changed it recently, and forgot about doing so. That's all I can figure.

Obviously, I can still use the Touch ID, so—at least now—it’s not like I can't get into and use my phone.

But when I’m in my phone, I can't see or change the Alphanumeric password ... because you can’t see it, and because you have to enter the current one to set a new one.

I know there will come a time in the not too distant future where I will only be able to access the phone via the Alphanumeric password—for example, when that Alphanumeric password ages out, or when, for some reason, the Touch ID isn’t working for me.

So what do I do? Thanks!