It's normal to feel up and down. When we flat line anywhere, we're in trouble. Everyone has good days and bad days, good luck and bad luck, blah, blah, blah. It's okay to feel blue sometimes and it's certainly okay to feel giddy sometimes, and sometimes it's just okay to...feel.
I haven't been around here all that long, but so many on this site seem to think that getting sober is like taking a magic pill: get sober and all our troubles are behind us and we'll be happy forever. Sounds like a great fairy tale, cuz that's what it is - a fairy tale.
Life is not easy under any circumstances, everything requires effort, but I will say, it's a heck of a lot easier sober.