Tweak, please? Haven't had a period since my miscarriage in March.

I can see the line when I look at these pictures in my phone gallery, but when I post them in on here the quality is changed and they're not as easy to see. Can someone tweak them and make them a little more obvious? The line showed up immediately.

Also what are the chances of this being left over HCF from my loss that started on March 21st?