Post covid. I donno iam very depressed.

I was tested covid +ve 5 weeks back and after 14 days I tested came out negative, after negative I had gastric problem when I burp then I would feel like relief. Used pan d and sucrofil gel , and also having cough like when I talk r take deep breathes then I used montelukast for 10 days, while using it cough was suppressed.. Now its 4 days that I stopped it , today iam getting cough while I talk I feel like taking out the mucus forcefully then  having relief. and my gastric problem is coming and going on n off.. And my tongue is white in colour from the day I started using tablets.. Plz help me .. Iam feeling very depressed .. Some or the other symptoms iam facing right from starting. Some times weakness,  body pains,gastric problem.. Iam not getting sleep .. Some times I feel like fever but temp is normal sometimes up to 99 Done tests on 17/5 Crp 6.5 d dimer 0.35 chest xray normal ecg normal But still I feel like iam not recovered I donno iam very depressed...