Prescribed for adult acne problem which started around the age of...

Prescribed for adult acne problem which started around the age of 40. Had one go at it over the winter and found it very effective in curing my skin. However I am an outside worker all be it in Scotland, with a second go prescribed in June. This was a different experiance all together with I guess the sun. I now have what can only be described as water blisters under the skin on my nose and just below my lower lip line. These can be so sore like as many others have described a burning stinging sensation that can come on for hours and then just go. Although they are noticable on my nose as any alteration in temprature makes them very noticable by a deep redness circling each blister. Have also entered into a very low feeling which could be the start of slight depression although not totaly sure, just always seem to have very low points in my day to day life that I never had before. These blisters are still there and burning even after two weeks of not taking this medication of Doxycycline 50mg capsules. Would appreciate any helpful advice or an idea if the burning blister ever goes away? Thank you.