Ask your dermatologist. It's difficult to see in the pictures and he will tell you if your hair is weaker or is just your natural hair line in which case you can just change your haircut.
Sometimes is just some temporary lost (like at the beginning at autumn) or stress. So, be calm until you see...
You should look at hair next to your scalp. Thickening may be visible in hair that you already have, just at the beginning of each hair and new hair will help you cover those areas. Obviously it's going to take a while until you see it on your ponytail.
My dermatologist told me to keep always my...
Same here! I'm thinking about starting with minoxidil but even though some people get great results I've heard about this skin and dark circles problems, aging skin, headaches
Any recommendation?
I was worried about side effects too, so I'm doing now 0.5, 3 times a week and I'm doing fine. Obviously everyone is different but if side effects is your concern maybe you could try with a different dose.