Im in a funk

I been in a funk lately idk if it's my period or not but lately i just been sad ig i don't really feel like doing anything ik i have alot of work to do but i just can't bring myself to do it plus yesterday my body felt like i got hit by a car i was in so much pain today i just feel unmotivated to do anything and i have a couple of assignments due today and ik i have to do it because i want to pass but i just can't mentally do anything but sit here i feel like everything else requires energy and i don't have energy to do anything but ik that i have to do something any advice?