11 Weeks - Brown Discharge (asking for a friend)

Hello!

My GF is 11 weeks pregnant with her second baby. At 10 weeks she had some light brown spotting and then again yesterday and today accompanied with small lint size chunk of brown discharge when she pees...

Her doctor said it's probably nothing and probably because she's been a little more active (spinning) and a 2.5 year old.

She petrified that they are going to tell her tomorrow during her newly scheduled appointment that she is going to lose the baby 😔 has anyone else experienced this and continued to have a healthy pregnancy?