Fatigue weakness low bp. For low bp!

I am facing some health issues for last 3.5 months after the sudden demise of my mother. Also,I had accidentally injured my teeth n mouth badly & was on liquid diet for around 20 days since end of January 2021.Since then my diet has gone down.I am having low BP ranging from 98-105/ 58-64 for last 3 months. Feeling too weak and unable to do any work. Apart from low BP and lose of appetite, I am facing below health issues: 1) Fatigue n weakness throughout the day 2) Chest pain - I have experienced this for 5times during this period & it lasted for few seconds only. 3) Pain in arms and hands. 4) Shivering in hands. 5) Shortness of breath - usually experienced during day time.I was also tested covid positive on 13th Apr.21 with mild symptoms & was under home isolation for 14 days. Post isolation period, got re-tested & was negative from covid. During that period I had taken the prescribed medication for Vit C, zinc, B12 & azithromycin. I have taken calcium for teeth electral/ors for low bp