Do I have anxiety issues?

this is going to be really long, im sorry, but i really need help. I have love horseback riding my whole life and all the toys i ever played with and all the movies i ever watched involved horses (im 14 now so thats not really the case anymore) and i starte taking riding lessons when i was 7 but then stopped after a year and then i started again last september. i started out going once a week just for my lesson but then i got a new instructor an i asked her if i could come out and help around the barn sometimes and she said yes so i came out on mondays and wednesdays then one of my friend started taking lessons on fridays so i would go out on fridays too. now i go there everyday after school, even if i plan on riding or not, and i stay till 6pm (i get out of school at 2:30). i just dont go on saturdays or sundays except when we have to get ready for a show. im there most of the time now and my friends want me to hang out with them more but i would rather be at the barn and this week i havent been able to go there as much cuz i had to go to a bunch of parties... i havent been there since teusday (its saturday today so it has been like 4 days)... and i was at a sleepover party thursday night and was up and running around and active till like 2am and then i went to sleep an woke up at 9:30am (friday) then went to a party from 5-9pm that same day. i got to sleep (at my house) by like 11 that night. today (saturday) i am supposed to go to a tennis lesson from 2-3 then a party from 5-9pm but im not going cuz i had a breakdown and was crying hysterically a lil while ago from being over tired. usually i go to bed at like 9:30pm. but when i was crying i started thinking about how i havent been to the barn and i started crying even harder and i wanted to go to the barn right that second to be with the horses, but i didnt tell my mom that, so heres my question now that i gave u some background info: do u think i have anxiety? or do you think im just over tired? thank u!!!!!