Hi, I am a 21 year old female...if that matters!!

For about a week now I have had gas a lot and having bowel movements more often sometimes diarrhea but not always. I get heartburn every now and then and abdominal pains. Just today I have all of them...I dont know if I have a fever because I dont have a thermometer but i feel like im burning up and then I feel fine....should I be worried??