Expiration dates

I’m going to be out of town on the day I typically would take my injection. It’s also the date I would need to pick up the prescription so I won’t have my normal dosage available to me until possibly the following week. I do have a couple of 10 mg (I’m on 15) available, which I could use in a pinch, but they will be expired approximately one month after the actual expiration date. Hopefully this makes sense. Has anyone used any of these dosages that have expired?