Been not posting for a bit for bad-feeling reasons and now this
Shit just keeps getting worse and worse 
One antigen test (all I had/can afford) is negative but I’m almost certain its covid cuz my friend I see all the time is sick and someone they live with has a confirmed case :(
I have never felt more doomer in my life, can’t stop thinking about not living
I don’t want to get worse anymore
At least this time I don’t feel so sick
Home Test2treat has been discontinued unfortunately but their page now links to https://www.paxlovid.com/paxcess for acquiring free paxlovid when you’re uninsured, might be worth checking out.
Swabbing your tonsils/back of your throat along with your nose is the best practice for home tests now. You can test negative from a nasal swab and positive from a throat swab on back to back tests.
No-cost testing resource: https://testinglocator.cdc.gov/
Hope you feel better soon and double hope it turns out not to be covid in the first place.