Hi, welcome to the forum, you are going through visual hallucinations which seen due to neuroophthalmologic dysfunction resulting from a wide variety of underlying etiologies. This condition can overlap with visual illusions which include distortions of size (micropsia or macropsia), shape (metamorphopsia), and color (dyschromatopsia).
The type of hallucinations you are experiencing is known as Complex or formed hallucinations as you see things with details like people around you. In such cases it is very important to note any other conditions like eye problems, stress, confusion, memory loss, alcohol, drug, and medication history is also important.
Conditions which can present with such symptoms are Migraine (aura manifests as visual hallucination), Seizures, Alcohol and drug use, psychiatric illness and metabolic encephalopathy.
You need to undergo polysomnyography (PSG) to rule out sleep disorder, EEG to rule out any epileptic foci, and also psychiatric evaluation which will help to rule out any factor.
This is nothing to be particularly concerned about.
These are commonly called "sugar people" and are generated by abnormally high or low blood sugar levels. That's the most likely scenario. They are extremely realistic and the experience is very tactile. When people fast for a religious experience this is often what they are trying to produce.
Get yourself a blood sugar meter and ask your physician for an hba1c test.
You are not going crazy.