Hey, I just signed up to tell you that you are being a little silly and extremely harsh on yourself. I have those exact 'C's on the side of my head -- even more pronounced than yours, in fact -- and they are completely normal! Your hair is not thin, your hairline is absolutely not masculine or out of the ordinary in ANY way or shape. Relax, honey! No one has an even hairline except Kim K and that's because she sandpapers hers off every 24hrs.
Quick edit: If you don't believe me, look at any young child or baby's hairline. The vast majority of them have hairlines that go in at the sides! Also, Marilyn Monroe had a widow's peak so we're definitely in good company. x