Hi Kingelocin and Welcome to the Train.
Sometimes in early quit, anxiety and stress can cause head aches and palpitations. I had quite bad palpitations for about 4 months when I first quit. I found relaxation helped me, lying on my bed with headphones on, listening to hypnotherapy, and ASMR, was so soothing, their voices really relax you. Also audio books, and relaxing sleep music and sounds do wonders.
Remember to treat yourself too, it’s amazing how the money adds up when your not buying smokes.
stay determined
