Teething 21 weeks

My baby just turned 21 weeks. The last three evenings have been very challenging. She has been up sporadically throughout the early portion of the night crying until we’ve given her Tylenol. I believe she is teething because she is also extra fussy during the day and chewing on more objects than normal. I don’t believe this is the 4 month sleep regression because she knows how to put herself back to sleep.

What have your experiences been with teething? Do they sound similar to this?