blackout after drinking for multiple days

(skip to paragraph 2 to skip introduction). so basically im a 21 year old male and i have been gradually increasing my drinking the last few months (about 5). it has now gotten to the point where i get back from my weekly 3 day job (fishing, and im sober for the most part). and then ill go home, shower (as quickly as possible) and then start drinking

once i start drinking i cant stop and i basically blackout for the next 4 days (usually waking up at someones house who i hardly know, thinking "where the f* am i?") only to barely make it to work on time let alone sober. i know its obviously a problem and i am seeking help. but my question is has anyone been down this road (or worse)? and where did you end up and how (if you stopped it)?

i believe your answer will greatly help me so any response is appreciated. thanks!