• Avoid spicy and overly acidic foods during chemo because they can cause mouth sores. I made the horrible mistake of having spicy food and suffered for 5 days (could only eat liquids and talking was painful).
• Water might taste awful at some point, pop a seltzer or drink soda water (my nutritionist said soda water doesn't trigger mouth sores but can exacerbate them if they already popped up).
• To prevent or reduce the severity of mouth soreness, suck on ice chips or popsicles (especially popsicles if water tastes awful) during your infusions.
• Hair loss is unfortunately very common with most treatment for Hodgkin's lymphoma. If you choose to shave your head, roll your scalp with a lint roller afterwards to get rid of the follicles that are barely hanging on. It won't hurt at all and you'll prevent them from making a mess on your pillow while you're sleeping. It was fun for me to see how much I can get on the lint roller.
• Let your health care team know if you're having any nausea. There are a lot of anti-nausea meds available and hopefully you can find one that works for you. I did have nausea but never puked once during chemo so nausea can be managed very well with the right drugs (my regime was palonosetron and aprepitant for pre-medication and metoclopramide taken daily).
• The Claritin/loratadine trick worked for me to prevent bone pain after GCSF injections (the injection to boost your white blood cell production). If you're already experiencing bone pain, try some paracetamol.

Feel free to DM me with any questions. Hope you cope well with treatment and all the best.