You need to be seen by a doctor. They can check in your eye to look for a bleed. I'm sure there are other tests that can be done as well. Don't wait because any symptoms inside the eye will clear up with time. I had a similar thing happen at work one day - lost the vision in my left eye for about 15 minutes. It gradually came back.
It's best to find out if you had a TIA since that is a warning for you. Better to know now and head it off instead of waiting for another TIA or worse, a stroke.
Anyone, (this includes doctors) that has himself for a doctor has a fool for a doctor. Never diagnose yourself. Go to ER if necessary. Obviously something has happened and you need to see a doctor and likely a specialist. Do It and get some peace of mind. All the best.
The fact that you self diagnosed yourself a few months ago probably led you to this door. No one should do this and as said above, not even a doctor. Get this checked out by someone who knows what they are doing!