I had to use my research app called EndNote to find articles on Methenolone Acetate (Primobolan).  This drug has been banned in the US for many decades and also banned by the European Union since 1981.  The world peer-reviewed literature has a sum total of 19 articles, most of which are non-human and the most recent article being 16 years old.  Primobolan is stated to be a dihydrotestosterone (DHT) derivative and if so then it is a very potent hormone that can stimulate prostate gland growth. If you have an occult prostate cancer that is a great way to wake up the cancer and activate it given the more potent growth effects of DHT vs. T on prostate cancer.  My reading is that Primobolan in injectable form is far more potent as a muscle-building hormone than the oral version.  Apparently there is no aromatization of this molecule to estradiol.  I do not know how it could "crash" your estrogen level.  I do not think it would affect prolactin levels, but I cannot find any literature about this.  I would not be enthusiastic about buying a product from Turkey without someone analyzing the product. 

Your vision problems deserve an in-depth evaluation by an ophthalmologist.  If there was documentation of visual loss or abnormality in visual fields, I would get an MRI of the pituitary and optic chiasma to be sure there is no pituitary adenoma.  I would double check your TSH since you have one abnormal level and then one apparently normal level. 

For sure, given the DHT affects on the prostate, I would be monitoring my PSA.  In fact, any man on any form of TRT (testosterone replacement therapy) should be monitoring PSA levels with a scientific approach (i.e., same assay, testing in morning only or afternoon only but not both, no ejaculation for 48 hrs prior to testing, watching out for a serial increase in PSA levels which may be forecasting prostate cancer in its early phase).