Tested positive on Sat I started feeling symptoms on Friday

more so just congested feeling ( stuffy nose, dull headache) Sunday morning I noticed I couldn’t really smell or taste. Today my PCP called back and recommended I take Zinc 50mg, Vit C 1,000mg , and Vitamin D 3 5,000mg, and to also get the monoclonal antibody infusion I’ve never heard of it but she recommends it so I got ahold of my OB doctor and they also recommended it but I’m nervous to get it. I’m also not vaccinated opinions?