@medtech4, I'm glad that your tests came back quicker than expected, and that they identified a targetable mutation. The targeted therapies can be a game changer where treatments are concerned. I see that they are starting you on chemo too. Of course, make sure the team is proactive with the anti-nausea meds. They should help! I wonder if the Tagrisso may help with the head pain. Did your doctor give you an idea of how long it would take to notice results from the meds and chemo? When I started my targeted therapy, for ALK not EGFR, I could tell it was working in the first week because I started feeling better and could breathe easier.

There are others with EGFR exon19 deletion in the lung cancer group too. You'll see some of their comments in these discussions too. @flusshund, Matthew is a long-term EGFR survivor.
Here are couple of links to discussions that may be helpful.
https://connect.mayoclinic.org/discussion/tagrisso-for-lung-cancer/
https://connect.mayoclinic.org/discussion/carboplatin-plus-permetrexed/