Inability to fall asleep on my own

In the last 78 hours I have only gotten 6 hours of sleep accumulative, all via melatonin pills. I has been struggling with sleeping issues since the start of July despite not changing anything in my daily routine.

• I eat regularly, get an intake of enough calories and 2l-3l of water daily, work-out due to actively playing sports, always went to sleep between 9PM - 10PM after I did my wind down routine. No matter how much sleep I got I woke up tired, any dreams I used to have disappeared, it felt more like blinking away the night. Then - on the 5th of July, I did my usual routine, went to bed and woke up at 2AM in a drowsy state, and despite that I couldn't fall back asleep. That same morning I went to the doctors and explaibed my situation to her, which she dismissed as late night endeavors, and recommended me melatonin pills. Night of 6th of July I took the 3mg melatonin dose and went to sleep, my sleep lasted 2 hours (10PM - Midnight), with no dreams present and no rest at all, any further attempts at falling asleep despite my drowsy state didn't work, even though I could barely move due to my tiredness. I laid in bed until 8AM, trying to fall asleep (which didn't work). I thought about taking another 3mg dose, but I don't have a good relationship with any sort of pharmaceutical business, and was afraid something could happen. That day I was unable to do anything correctly, I felt tired and drowsy, but I couldn't fall asleep no matter what I did. Same thing happened the following day, 2 hours of 'sleep' and then nothing, I went to the doctors only for her to now accuse me of pill-seeking behaviour. As I'm writing this it is 6:15AM, 9th of July, same events happened as the previous nights, I feel constantly paranoid and cold, I started experiencing auditory hallucinations which are scaring me alot, I havent experienced visual ones yet, but I am afraid they might come soon, since I've also began having false memories. Please, if anyone is aware of what is happening to me I beg of you to try and help me out, I am unable to lead a life like this.