Hey guys, i have been dealing with this phobia for about a decade now, I finally got my parents to support me,but right now something feels wrong

Yesterday about 4pm ish i got on the bus and touched the poles (duh.) but possibly my mouth,Yesterday i lost my apetite at breakfast and dinner,and started being really nauseated and worried since i used the bathroom twice in a hour.
But its been about..almost 22 hours and i have no nausea or headaches or whatever, just a weird lump feeling in my throat,i can swallow water and was just able to swallow a bit of my sandwich although felt like it stuck there for a while but water pushed it back a bit.
I also find it difficult to swallow saliva, i have been taking strepsils and olbas oil (i have nasal congestion) and nothing seems to work

I panick because i dont want this virus or to cough something up or vomit from coughing

Help asap