I don't know where you live but here in UK if you ring 111 and say you suspect you might have the virus they will send someone to drop a testing kit through your letterbox and take it back for testing. No need to go anywhere.
Updated my bad currency exchange math. Thanks, mprev.
In the US, you have to go to a doctor or hospital, hope your insurances covers it, or else you’re out $3000 (£2300).