You are suffering from hormonal changes causing post covid Telogen effluvium causing hair fall. It's completely stoppable even regrowth of hair is possible with certain medications without any side effects. Treatment depends on the grade of hair loss. So, it's a must for diagnosing which grade, you are in for an effective treatment. Please  send photos of your head, by direct online consultation for accurate diagnosis and proper treatment.

Yes, hairfall is common, but is usually temporary. Take protein rich diet. If hairfall persists or is excessive, consult online for detailed discussion and specific medications