Total t mobile noob here..... topic

So i just switched to t mobile from verizon and there i was tethering something like 60gb a month with no repercussions. So when i moved i got the unlimited everything and i know that doesnt count for tethering. so i decided to see what would happen when i tried.



This is from about 4 hours of testing.

Question is, where do i see tethering usage? or have i gotten passed it with running a custom rom? Or are they going to nab me after a month or so?
Thanks guys!!!