Pleased your quit feels secure. Also good to be busy, busy is great to pass time. Crave probably came on the downtime when you had relaxed and would normally have smoked. Now you at least know yourself it does pass and the more you dismiss the thought and think smoking is not an option, the quicker the craves pass.
The dizziness could well be the quit. However, do some basic checks. Is lithuania having a heatwave, could you need more fluids? If it's quit related it will pass in a few days but don't overlook other things too is all I mean :)
Sleeping. What's you caffeine intake like? Smokers can process caffeine much quicker than non smokers. I literally had to more than half my intake, others told me it was like that for them. However day 1-3 could also be the effects of chemicals and nicotine leaving your system. Just goes to show what we were doing and we don't want to do it again.
Lungs, coughing up stuff is better than keeping it, best I can offer in the way of help.
I think you're doing fab!! I know it feels so slow right now, like only day 2....switch it around....2 days of freedom and onto number 3. Be patient with your quit and yourself my lovely, you are reversing years of damage and taking your life and health back - every day of that is a massive win!
Love the ticker!!