You may be taking 125 micrograms and not mg. If
TSH is 14, Increase your dose to 150 microgram and check the levels again after 2 to 3 weeks, then accordingly slowly increase the dose till it comes to normal. If you have associated symptoms , it is always better to contact a physician.
Next Steps
check
TSH levels regularly
Health Tips
Do exercises
Take medication regularly
Observe for change in symptoms, if they do not subside or aggravate then immediately contact physician