Is sinusitis related to the recently awakings during the night? i haven't changed anything of my routine and didn't drank any caffeine. connection?

Doubtful, unless: You wake up because you can't breathe, are coughing, or are in pain. If you have a sinus infection you need to be treated with antibiotics. If you are already on antibiotics, some of them can cause insomnia, so that may be related. If you haven't seen a doc and been treated, that would be the next step. Feel better!

Night: Usually not. Sometimes a bad cold or allergies will clog the nose and keep you up. Other times the meds you use to treat sinusitis are stimulants and will disturb your sleep