Have any of you ever gotten headaches when you switched from smoking to vaping? If so how long did they last? Just wondering cause I started vaping about 2 weeks ago and i hope I'm not the only one here that this is happening to. I use an eleaf ipower with an aspire cleito tank and I believe I may have found my comfort level of 8mg nic juice. I first started out with 12 mg nic juice and that proved to be way too much for my set up and 6mg was way too weak. When I first started with the 12mg it made me nic sick and I got severe headaches. 8mg keeps me satisfied but I still get headaches and have to take ibuprofen daily. My current juice ratio is 70vg and 30pg, I try to keep myself hydrated as much as possible throughout the day. So I don't really know what's going on, is this normal cause I quit actual analogs and my body is healing itself? How long will this last?