MLC with a side of infidelity

[Optimust]

851am She TM me this morning 'we must talk as soon as you get off work'.

9am I called her, she couldnt talk in front of other co-workers, said would call later.

NOON I call her back, 'whats up, your worrying me', 'should talk face to face', 'is this about DD's or us?' 'both, I will try to call at break'

I'm freaking out, I think she is going to tell me she filed. I thought I was ready for something this scary, but not sure what to do. Heart rate is huge, scared to death.