I don't know how old you are, but anyway Test will convert to DHT in the body and that can cause hairloss if you are predisposed, but it wouldn't happen on your 4th shot it takes a couple months to affect the life cycle of fair follicles. Nizoral is ok, but finasteride (propecia) is what you need. Aromasin is to control estrogen, shouldn't be a factor for your hairloss issue. If your hair was long you would definitely know if you have a shedding issue when you shower. You have to lose a significant amount of hairs before you can notice baldness.