Severe hairfall for past 2 years. How should I treat this? Any inputs?

[Hairfall 12]

Hi all,
I have severe hairfall for past 2 years. It started after I move to a new country.
I moved to the US 2 years back from another country. I had a very long thick hair. Had a huge volume of hair.
After I move to US,I started seeing my hair falling out and thinning gradually from March 2017. I thought it will go off on its own. But it didn't.
Then I visited few doctors. I went to my PCP,OBGYN. They did a few blood work and said all the blood work looks normal and it will go off on it's own.
But nothing changed. I see a lot of hair falling off everyday. So, I visited a dermatologist recently( Dec 2018). She did few blood work and said everything is normal except my vitamin D. My vitamin D is very low and the value is 12.1.
She didn't mention the reason for my hairfall and prescribed me Minoxidil 5%oil. I am applying that everyday. It's been 2 months, I don't see any difference in my hairfall. Its still the same.
I am taking vitamin D3 supplements now to increase my vitamin D level.
Apart from that,I really don't know what's the reason for my hairfall? I almost lost 60 to 70 percent of my hair now. I usually see more hair falling off in the morning after I wake up. If I need to run through my fingers, i can see lots and lots of hair coming off. Also, during shower,combing and through out the day. I can see lots of hair in my floor everyday.
I don't know what to do and how should I treat this? What could be the reason for this? I am so worried about this everyday. Getting upset by seeing my hair going very thin. I don't want to go bald.

Anyone please share your inputs. Any input is really appreciated.
Thank you.

[mrclean]

Start propecia. How old are you and can you submit pictures?

[Hairfall 12]

Start propecia. How old are you and can you submit pictures?

Thank you so much for the reply.
What is propecia? I will submit the pictures.

[Hairfall 12]

Do anyone know the possible reason for this hairloss?

[mrclean]

Just Google propecia and hairloss and you will get a wealth
of information.

[Hairfall 12]

Any other inputs from anyone?

[frankie86]

How long have you been taking the Vitamin D supplements, and at what dosage? @Hairfall12