Hello,
For the hair fall, causes could be due to stress, fungal infections, alopecia aereata, hormonal imbalance (overproduction of dihydrotestosterone and thyroid hormones irregularities),malnutrition, telogen effluvium and sebum plugs on skin.
In your case it can be due to telogen effluvium since the hair enter the anagen phase in pregnancy. See the growth cycle of hair is in two phases, anagen or growth phase and telogen or resting phase. During telogen, the resting hair remains in the follicle until it is pushed out by growth of a new anagen hair. In telogen effluvium, a large number of hair enter telogen at one time.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your dermatologist. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
For me, I found out it was low ferritin. My doctors all told me my iron was great, which it was. I went to an intergrated doctor and she tested my ferritin levels which were below the lowest considered normal. She put me on iron. I wasnt sure it was smart since my iron levels were good, but I read a lot about it and spoke to some professionals and decided to give it a go. After 4 months on the iron, my hair is looking a TON better! So much so that now I look like a normal person. (for me, I can tell its still not the same as before becaue I use to have THICK hair) but at least I cant see my scalp anymore and others all think I look great. I an not saying this is your situation, but it was mine.
It could be a result of the anesthetic used in your surgery.
It could also be due to a hormone imbalance. A doctor could determine this with tests. Rather than taking just biotin, try taking a vitamin B complex of 50mg. If possible buy a natural shampoo and conditioner.
Hair loss is also related to stress levels, which is where the B vitamins can be very helpful.
Try taking some Biotin (supplement over the counter)
u must use herb shammpo, ex, aloevera.