No appetite, no libido. Stopped taking thyroid medication and quit weed.

I M26 am looking for some advice because I have just tried to have intercourse 2 hours ago and I could not get a hard erections. So I have been diagnosed earlier this year with mild hyperthyroidism and I was supposed to take 25 mg medication. But since April, I did not take the medication because I though that it did not affect me much. After that I had started having edibles and I have only been able to quit a week ago. Since then, I have no libido and no appetite. I could not even masterbate to porn. I met someone new 3 days ago and while I was making out, I got a bit of an erection like 70% erect.The problem is I did not at all feel any thing even remotely sexual, no feelings at all. During the intercourse, my erection had completely disappeared and I was completely flaccid. It was so embarassing. I have never had such a problem before. Please help me out pn this! What kind of doctor should I even consult?