I'm sorry you had to go through that. Super gross and jarring, especially after a therapy session...awful timing. But will you get sick? Nah. It sounds like janitor had already cleaned it up before you came out, am I correct? Either way, you're not going to catch anything. It might not have even been something contaigous! Sounds like you went above and beyond to sanitize and disinfect yourself and everything around you, you will be FINE!