Is this depression, anxiety, or just stress?

when I was 15 to 16 for about 6-7 months I got really down after one night i woke up and my ears were ringing and i stressed out about it, I never tried to commit suicide or any of that just got really down it was between the months of december to june-july but then slowly went away, by the way i still have the ringing, for a little more than two years it was gone, now im 18 and in college ive moved twice which is kind of stressfull, along with school and stress, then I got these bumps on my penis and my stomach and stressed like crazy thinking they were stds and one night i had what i think was a panic attack then the next morning i was down again, so i tried to figure out what was causeing it so i went to the doctor and said that i thought it was anxiety and they told me it wasnt so i noticed my tougue was white and thought i might have thrush a candida dieses which causes these things so i got meds for it fluconazole and nystatin and it made me feel better but it turns out i didn't have thrush just had a white tougue so i thought the meds just made me think i was better. so i told the doctor about the bumps and he said they were molluscum contagiosum but he wanted to test me for stds including hiv so i did a blood test for a list of like 20 different things and all came back negative, so he gave me meds for the molluscum and i feel fine all day long until about 5-7 in the afternoon then goes away after an hour or two and i feel fine its been going on now for about a month and two weeks but seems to be going away, could this be depression, ocd, anxiety, or could i just have been stressing alot both times and thought to much? *please don't tell me to see a doctor don't comment if your going to say that cause I already have been to the doctor, thanks!