25/f/i'm having mod to severe r side pain which extends straight to my back. Also having intermittent severe lower abdominal pain which causes nausea?

See your doctor. Isabella i would recommend seeing your doctor because there are several potential causes and some can be serious. Some possibilities include gall bladder disease, pancreatitis although there are many others. . If your pain tends to be worse after eating especially meals with fat this is consistent with gall bladder disease. Seek medical evaluation immediately in the case of yellow skin or fever.
Many causes. This group of symptoms could arise from numerous conditions depending on factors such as fertility and previous surgical procedures. Irritable bowel, gastrointestinal infections, kidney stones, appendicitis, pancreas inflamation, or even gallbladder disease might show up like that. This would be best addressed by seeing a doctor in person for examination and testing.