if you are a women chances are it is transitory, just eat well and try to avoid stress.
If you are a men, well ****luck, man up or to transplants.
Rogaine has marginal effects that only last as it is done, and doenst work for everyone, the evidence level is very low. Do check your hormones, you might have an inbalance, it might help you to do estrogen therapy or spironolactone.