I don't know where you are, but in my area (east of NYC) the ERs are non-COVID and strictly separated. Weigh the risk, but know that the ERs are not necessarily warzones. Call the hospital and ask them, but don't delay care just because you don't know the real risks. I've been (physically) to an urgent care clinic, a specialist's office, and a dentist in the past week, because I waited two months for care, and I'm feeling pretty stupid (I'm high risk). The protocols are different, waaaaahhy more strict, but they are treating people.