I am in my first trimester and facing major hair fall. Is this normal?

In your first trimester, nausea and vomiting can lead to poor nutrition, which could explain the hair fall. If hair loss is major, it could be because your nutrition is quite compromised. You can consider dietary supplements with vitamin B complex, biotin, vitamin C, vitamin E and zinc to alleviate this problem. However, best to check with your doctor before taking any type of vitamin supplements during pregnancy.