Ok first thing, a jewelers loupe is cheap, you have plenty of time to get on that while your plants ripen. Give them at least 3 more weeks from the looks of things, probably more like 4 before it will be considered ripe.
Looks like you are outdoors, I am not sure what latitude you are at but some strains will take longer than others and hopefully frost doesn't become an issue. Latitude can also play a role in flowering times depending on genetics. If the plants are close to ripe and a hard freeze is forecast the next day you should chop them before they freeze. Frozen trichomes are broken by ice crystals that form inside, this causes excessive oxidation of the THC we are after.