what is causing this pain?

i have been having the same pain in my pelvic area for the past few weeks, and i have been trying to get an appointment with my doctor but everytime in schedule something i end up either chickening out and canceling it, or end up having to cancel it because of work. i don't know why i am scared to go see what the pain is from. i am taking birth control, but i have forgotten to take it in the past week because i was at the county fair showing my horses and i just forgot to take it. and i was still having the pain when i was off of my pill. i'm not sure if i should wait until i go back to school and see the health care team down there, or go to the ugricare sometime this week, or try to get an appointment to see my own doctor when i am able to come home (most likely not until mid-october because my doctor does not have weekend hours). i've tried taking motrin and tyelonol and nothing works, not even midol. what can i do?