Random cries in the night-ftm

My almost 6 month old is put to bed at 8pm. Lately she has been waking up from a dead sleep to scream/ cry. I give her a pacifier or rub her belly and she’s out within seconds. Meanwhile her eyes are closed the entire time.

Anyone else go through this? Is this normal?

She is also teething, no teeth have popped through but she’s constantly drooling, always is chewing on her hands and anything she can get her hands on, and her gums are white.