Haven’t slept in 2 days

So as the title says I haven’t been able to sleep for a single minute in 2 days… I’ve taken both valerian root and melatonin the 2 previous nights and a generously good dosage (2400mg) of valerian and still nothing.The worst part is that these days I have some very important lessons which i need to attend but I have literary 0 focus and can’t concentrate due to the fact that I haven’t slept 2 whole days.Does anyone have any advice that might help me fall asleep tonight?