AuDHD and hormones and deadlines: help!!

I have an impending deadline for uni but have been feeling horrible for the past few days and even less inclined to be productive than usual. Aaaaand then lo and behold, guess which uninvited guest decided to pay me a visit yesterday...

So now I am in this really fun situation where I am bleeding, uncomfortable, don't want to leave my bed, and have extreme brain fog, but urgently have to convince my brain to kick into gear. My usual 'aaa you have a deadline to meet hurry up' thing is not really working for me right now.

I have read before about the impact of hormones for ADHDers who get periods but have never found a way to make my brain cooperate while I am feeling sluggish and foggy. Does anyone have any advice? Is there anything I can do to make my brain start working?