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It could be. If so, it would likely be very sensitive in that area.
The best news is generally speaking, this condition clears up often given a week or so of time, and without intervention or any type of invasive procedure/s.
So, hang in there, if it gets worse, as opposed to better, I'd get in to see your Family General Dentist for a better & up close view. But likely, it will come & go in a short amount of time.
I wish you all the best!
*PS: If needed, Ibuprofen or Tylenol tend to work quite well for any discomfort.
I'll check back with you in the morning, and see if you have any further questions/concerns, etc. - OK?