Am I sick?

I went home early today because I started feeling sick. I had a runny nose, a tickling throat and a cough. After drinking some superfood juices and hanging out at home doing work, a thought (just a single one) dawned on me. I've never had allergies before... but could these be allergies? I mean I'm 27. I've heard of allergies developing later on in life. However, since I've never had them, I don't know if I'm actually getting sick again or I'm gaining to ability to be allergic.

We'll see if my snot is glowing green. That's a pretty good indicator.