Hello , your hairfall and weight loss can be related to each other due to some systemic causes. this will require detailed evaluation and might need some investigations. Kindly consult online.

You are suffering from hormonal changes causing 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.