I've done the testing before - Schamroth's sign - the diamond for my index fingers is so incredibly small that I don't even think a sharp pencil tip or a needle could pass through. I do see a little bit of light coming through, but barely. Same with middle and ring fingers. Thumb and pinky fingers - there is a clear space.
I first noticed this around the beginning of January. It doesn't look like my nails have changed much since then, they've stayed the same. I worry about lung cancer because I've noticed shortness of breath when going up the stairs and when I'm not even anxious- I feel my heart racing more often and I break out into a sweat. I've also had some random chest pain coming from near my right side that will randomly come on and stop in a flash. Also, when I press on the area it hurts. So idk. I'm only 26 and have no family history, so I know the chances are extremely low, but since I noticed my nails again, I've been scared.