Three months..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 for accurate diagnosis and proper treatment.

The excessive hair shedding commonly occurs when the patient has had a recent episode of stress. This stress refers to the stress on the growth cycle of the follicle which can be affected by various factors. Recent history of losing weight , post delivery, recent illness, discontinuation of certain medications like birth control pills, use of harsh hair products, or mental stressors from strain in personal or professional life. These episodes can result in increased shedding of hair and the condition is called telogen effluvium. The increased shedding can continue for a few months after the stressful event. However, if the stressor continues to be a part of your life it can also lead to long term continued shedding which is then termed as chronic telogen effluvium. As your body readjusts, the hair shedding reduces and hair begins to regain its normal fullness over 6 - 9 months............. IN YOUR CASE, just multivitamins and shampoo will not be enough. you need additional lotions to control the telogen shedding that was induced due to typhoid. you can get in touch through online consultation if you want a prescription for the same. hope this is helpful.