Pretty sure I caught covid around last days of march

Around maybe March 27th I was just sitting on the table eating popcorn, then felt my heart racing and like I was about to lose control. I ignored it and on April 1st I started feeling tired for no reason and when I got out the gym I felt sick nauseous and my left side of face was burning. April 2nd had an itchy eye, feeling tired, nauseous and a lot of burping and lower stomach pain. For the next weeks continued the same until April 20th I had respiratory symptoms too and loss of smell and taste. No one in my family got sick just me how is that even possible. I still have loss of smell I tried smelling a fragrance today and the smell is barley visible. In 2020 I also had covid in June and didn’t get respiratory symptoms but I had GI symptoms, olfactory hallucination of a smoke in my nose for 2 weeks.