Been getting horrible headaches and with them a numbness, tingling feeling on the left side and back side of my head. Dizziness?

Atypical migraine . You probably are suffering from migraine and need proper treatment for you should visit and urgent care Center or go to or visit ER. Meanwhile use excedrin migraine or ibuprofen 400mg tablets every 6 hours. Drink a lot of water. Caffeine sometimes help in moderation .
Many reasons. Could be anything from premenstrual syndrome to migraines to severe tension type headaches to hemicrania continua or even just being tired of all the good weather you're having compared to us here in Cleveland Ohio? Don't you wish it were 29 deg. there? I'm a headache specialist and would be happy to help in private consultation. Look me up @ Key Code: PDXFNR.