You told me that it would come on yesterday. I also remember that you mentioned that it is always late so I took a gamble to try and write this today. I wonder how close am I...
I know you generally sleep late but during this period, I would like to encourage you to sleep earlier so that you can sleep more. Do take a nap if you need one so that you will have more energy.
You might feel that your beautiful breasts are swelling and they might hurt. Try hugging a heat pad or soak in a warm bath. If that doesn't work, try cold packs to see if it soothes you or not. Also, try to wear a bra that fits correctly when your breasts are swollen.
If you feel cramps, holding a hot water bottle or heating pad over cramp zone will help. I would suggest you to sip a warm drink. I personally think that chamomile tea will be a good choice as it will help you relax. Gentle exercise will help you too. Stretching will be a good idea.
You should eat more fruits and leafy greens. Just avoid those that could trigger an allergic reaction in you. I am not sure if you can take dark chocolate or not. If you can, do take them. I'm not worried about your water intake as I'm sure you are drinking plenty of them.
I hope that this period will treat you gently like I do. Take care of yourself, my little one.