I have trimmed the middle portion of my eyebrows hairs with scissors how long does it takes to get back visibly?

Photos are helpful but a complete history and examination are necessary to make an informed diagnosis. Statistically, in a male your age, the diagnosis is most likely androgenetic alopecia and, if so, there are several treatment options each with an imperfect success rate. You can try them...

Stress causes hair loss in many people who have the genetics for hair loss. It sounds like you are more than stressed. Address your stress and you may find an improvement. 

This requires an in-person evaluation. I suggest seeing a hair loss expert now to evaluate and go over your condition and provide you information about your best treatment options. There are great non-invasive options like prp/progesterone and/or hair transplantation. See an expert. Best, Dr. Emer

Propecia is better for prevention and stopping future hair loss more so then regrowing hair. You should switch to an organic shampoo. You can also consider a natural DHT blocker like Saw Palmetto. Before taking any medications you should discuss this with your general physician.

You should switch to an organic shampoo. You can also consider a natural DHT blocker like Saw Palmetto. There are also medications like Finasteride (a DHT Blocker) and Minoxidil (Rogaine) that can be very helpful in maintaining you existing hair, helping to prevent future loss and even regrow...

You should be off of these medications for up to a year to be completely safe. Some doctors may say half the time.