Talk to General Physician on Shortness Of Breath

DEAR Drs iam a dental student study BDS 2nd year donate blood to a pt in hospital 8 days before but now 2 days before I got fever throat infection and low of energy as much that iam not able to walk then went for widal and mp tests but both came negative then use azathromycin and loratadine and pain killer after using these medicine my fever and throat infection have gone i feel normal except low of energy but suddenly today about 8 days of donating blood I started at night shortness of breath and for that I feel need of rapidly deep breathing and starting deep breathing which is very uncomfortable I feel like my breath is not reaching to the target tissues. now iam worried about corona but some of my friend says that breath shortness is also due to blood loss anemia and preferred milk 'juices and rest at home. pz Drs i need ur suggestions what should I do ??Iam in severe tension whether to go for corona test or rest at home ??Thank you