Girls, hi! It's week 19, everyone in my family got sick for a couple …

Girls, hi! It's week 19, everyone in my family got sick for a couple of days, but it passed quickly. I didn't have any cold symptoms, but yesterday my throat started hurting and my sinusitis began, today my bronchi are aching terribly. There's no fever, I'm only going to the doctor on Sunday. The corona test is negative. You can't buy medicine without a prescription from a doctor here, what should I do? ?