Yay, I'm glad you got them so fast! I was the same way with earskins at first (always having to see if they're still there) but you get used to it. They stay in really well.
I have sensitive skin and have never reacted to silicone; I think the key to it is not to leave it in for too long (more than a few days at a time).
I have 1/2" lobes and 11 piercings: left helix x2, both conches, both nostrils, septum, navel, and VCH.
My lobes are small but I know a lot about stretching and how to do it safely, so message me if you have any questions!