I started taking DOXY 100 Mg twice daily for MILD cystic acne, to...

I started taking DOXY 100 Mg twice daily for MILD cystic acne, together with a DUAC Gel in the morning. I took the first pill with a little food, but no dairy, and felt a little loopy. I noticed myself getting severly dehydrated also, and had to slam a lot of water (like 32-44 oz.) I took the second dose at around 5pm; by 11:00 PM I was experiencing a severe pain in my head just above and behind my left ear. I guess it could be considered a skin pain, but it feels deep; putting my sunglasses on sparked it up this morning. The pain is very acute and comes in waves of 10 -12, 10-15 second shooting pains in each wave. I discontinued the meds after seeing some of the similar "nerve pain" postings here and will advise my doctor on Monday.