I don't contact my T outside therapy often. I've emailed her a few times, but that wasn't about urgent things.
She has told me what I should do if I But I would never call anyone. I've had several times when I felt realle really bad, but I just go through it myself. I've always done that.

Maybe it's best to talk to your T about contacting her outside sessions. That will make it maybe easier to decide in the future.