Sneezing and fatigue

Yesterday I worked with a co-worker who was a bit sick. I didn’t get too physically close to her, so I thought I was fine. When I went over to a friend’s place last night, I suddenly started sneezing (I thought it might be allergies or dust to something in his apartment). Then today, I’ve been kind of sniffly and at around 8pm, I got super tired (but I ended up forcing myself to stay awake and made an apple crumble). God, I hope I’m not sick.