Execesive hair loss, gray hairs and constipation

Hello all,

I am 35 year old male, 90kg and height 5.7 inches.

I had diagnosed with Covid on November 14, 2020 and I have recoverd from it now.
While being positive I was having only having high fever with shivering and loss of taste, and no other symtoms were there.

Now from past 1 month, I am having exessive hair loss and its so high that I feels like I will get bald in amonth. When ever I comb or touch my hairs I got fallen hairs, like the roots the so loosen up that even if I touch them hairs came out in my hands. I found hairs all around my pillow, bed and room floor(When my wife does the dusting)

I am also having consitpation problem from a long time and all of my hairs are becoming gray. Even my father don't have that much of gray hairs. but I do :(

Please suggest some medicine for hair loss, gray hairs and constipation problem.