What Could Be The Cause Of Severe Headaches, Dizziness, Nausea, Ear Ache, Blurred Vision, Tingling In Fingers, Toes Turning To Purple?

Good Day Doctor, I wish you can help me or provide me with some guidance on what i am currently experiencing, I have been suffering with severe headaches for a few years now and have been taking some headache tablets for the pain, unfortunately for the last few months the pain has been excrutiating and last for days on end. I have also over the last few months been experiencing the following symtoms with the headaches, which are, dizziness, nausea, ear ache, blurred vision, tingly sensations in my fingers, the entire left side of my body is very sore and weak and sometimes there is no blood circulation as it turns blue. The headaches are very very painful and i have been taking the strongest of pain killers but nothing has heled, have tried almost everything but nothing is helping. Just a few days ago i see that my toes started turning clolour, it s a bit blueish and red and quite painful too, i am also starting to get sores in my mouth, it s almost like a blister. Please help as i am not sure what to do next. Do i go and see a physician, normal GP or a headache clinic. My email address: YYYY@YYYY or YYYY@YYYY Thanking you in advance. Anusha Jogi