Talk to General Physician on Shortness Of Breath And Out Of Energy

I had covid twice. Once in November and then in January covid plus bronchiolitis. Got its treatment( dayxone once daily, erythromycin, panadol and ventolin) and got better. Dr said no need of xray or PCR.. he said it'll get better on its own but since then I'm having shortness of breath and its not improving.. saturation is 97-99. But climbing even a few stairs i get completely out of breath and feel drained/ out of energy. My muscles n bones ache badly.even doing walk to improve it but no use. What else should i do?