Coffee and Caffeine FAQ

Ok, I quit drinking coffee nearly 3 months ago. I was also taking a supplement to workout with called ripped fuel which has caffeine too. I averaged a latte or 2 a day and one pill. Ever since I have quit them both I have felt pretty bad. I went trough the normal withdrawal stuff but even now I am constantly foggy, pressure in my ears, headaches, tired, etc. Can anyone tell me if this is normal? I'm a bit concerned that it may be something else. I am a 28 yr old male, if that helps to know. Any help would be greatly appreciated. Oh, I have taken sudafed and a antihistamine in thoughts that it may be sinuses or congestion and neither do much good at all.