Welcome Sos77. Sorry to hear about your relapse but keep that lesson learned top of mind once you secure this new quit
You should probably speak to a Dr. about the anxiety/depression issue. Are you on any meds for this before your quit? They might need to be altered. Same thing with the aching legs. Unless it's because you have been tensing up those leg muscles since you quit, you mat want to seek a medical opinion on that too. The tiredness is a pretty common early quit issue. Have you had your blood-sugar levels checked since quitting? Sometimes those can dip a bit when you first quit. Drinking fruit juice or sucking on a few hard candies might help. Listen to you body. There a lot of changes going on when you first quit. If you're tired, sleep more etc. Those things won't last all that long.
Make yourself familiar with this site and read all you can. There's some "pinned" threads on the main Quit Smoking Discussion page and some also on the Introductions page. We have a daily NOPE page too where some pledge their Not One Puff Ever each day to set themselves up for that smoke free day - one day at a time.
There's a Joel Spitzer video page as well which covers all topics related to nicotine addiction and quitting - very useful stuff.
Lots to keep you busy and knowledge IS power so .... go fill yer boots with knowledge about nicotine addiction
