despite your best intentions, you were not ever supposed to apply for a visa from any embassy or consulate while you are still in Thailand. The evisa website specifically asks you your current location, as embassies/consulates require you to physically be in their service area (in your case, Australia) in order to grant you a visa. You got away with it, so do what everyone is telling you and exit and re-enter to activate that visa.
Assuming you incorrectly thought the 60 day tourist visa grants 90 day stays when it just means it can be used once to enter the country within 90 days, don't worry. Just go to immigration offices within Thailand and extend it for 30 days for a 1900 THB fee, giving you a 90 day total allowed stay.
Advil is a name brand, like Tylenol. The actual drug is ibuprofen and is easily available at every pharmacy. Like the way bandaid has become a generic term in the USA but isn't what bandages are called in most of the rest of the world. Imagine claiming they don't sell bandaids in Thailand just because no one knew it by that name.