Call your dentist or the one you wish to go and inquire about the measures they are taking during the pandemic. It is equally safe/unsafe as any other field.  In any case most of the people have started going to their works and even a large section of dentists is also working . Dentists and other doctors are having patients right now almost since 2 months.  So quit fear and be intelligent to choose where to go. And yes no self medication

It isnt safe to take an antibiotic on a whim. The dentist may give you an antibiotic in the course of your treatment anyway. If u are worried due to covid-19, it's best to get a test done before you visit a local dentist. There are a lot of diagnostic centers doing RAPID ANTIGEN TEST, which takes lesser time and rules out covid antigen in your blood. Even though not very accurate/specific, it can rule out the possibility. In the meanwhile, using clove at the site of pain and warm saline rinsing might help you alleviate pain. If that doesn't work, you may consider using basic over the counter pain killers like crocin (or paracetamol 500)

Hello ,Tooth pain is not only about root canal treatment will solve,sometimes huge infection also do tooth pain,wisdom tooth also creates tooth pain itself you can then please share your tooth picture so that we can suggest you better