Very sorry to hear this. I've struggled with headaches pretty much the majority of my life (although, admittedly a fair amount of my school-days 'headaches' were just excuses to stay home ashamed to say...) and know just how horribly crippling a headache can be.

I would suggest some things to help but I'm guessing you know what frequent headaches are like, and usually people who commonly experience headaches already know about all the common methods like massaging your temples, a cool cloth etc.

If not I can suggest some things that help me that you could try, but either way I really hope you feel better and it goes away very soon, and definitely that it's not Covid.