Why am i hurting on my low left side outer pain?

Ok so i was wondering why i have been hurting on my lower left side on the front of my body its not appendicitis cuz i had that a few years ago and got that removed its an outer pain almost like i pulled a muscle now i was doing situps and i could have pulled a muscle its been bout e weeks now its not like a bad pain more of a annoying pain. When i have gas it gets worse the pain that is it could be because the intestine get bigger and pushes on the muscle but idk my mom does not seem worried about it but what do u think i should do i cant go to the doc till wensday and i dont think its a serious problem all help is aprecciated sorry for the misspellings. Do u guys think its a pulled muscle? Ps its not back pain at all its lower left side outer pain not bad pain at all please help