Apple Watch SE 2 sudden failure.

I bought an Apple Watch SE2 almost exactly two months ago. Yesterday, it started acting strange out of nowhere. First, the crown button stopped working. I restarted the watch and it seemed to work fine after that. Then, a few hours later the battery dropped from 40% to 30% within a few minutes. Five minutes later, it dropped to 24%, then about a minute later, I got an alert it was below 10%. Another minute later it said it was at 3%. Immediately I put it on the charger. When I did, the screen went completely black. I have attempted to hard reset it, but nothing happens. I left it on the charger overnight and it still will not turn on or hard reset. The apple logo appears and disappears intermittently, but it never fully turns on and it will not charge. It's not my charger cord. I tried it on my husband's charger, and it still wouldn't work. I also tested my husband's watch on my charger cord and it charged as normal. Has anyone else had something similar?