Upon Waking This Morning, My Chest Hurt. I Would Describe

Upon waking this morning, my chest hurt. I would describe it as pressure with a little difficulty breathing. I was very tired all day and nauseated also. Around 3 pm my right flank started aching. It is now hurting pretty badly and feels worse when lying down and taking a deep breath. Not sure if it is related, but I also had some blood tinged phlegm in the morning. I have never smoked , am overweight, and have rheumatoid arthritis.