We all worry too much when we start brewing. Everything seems alright.
I once dropped a plier, which still had sand on it, in my unfermented wort. The beer turned great!
I never used starsan (I use aseptox), but I don't think you're supposed to rince it. If you use tap water to rince it you might (althought it's unlikely) contaminate your wort.
Anyway, "don't worry, relax, and have a homebrew"...
"Au ciel il n'y a pas de bière: Mieux vaut la boire ici sur terre!" - Trappist proverb