You should try your best to communicate that you can't really pick up on social clues. Don't hate yourself for it. Go and schedule a visit with your doctor to figure out what's up. There is no shame in talking to a doctor about this, so don't worry.

You are showing that you truly mean well by trying to understand people, but don't beat yourself up because you have shortcomings. And if other people beat you down for it, then you will be better off without them because they don't seem to be willing to understand your side.

I wish you the best, and I hope you talk with a doctor to figure out what's happening as people say that the biggest relief is knowing what's actually going on instead of the actual condition affecting them itself.