No period , irregular period , only 14 years old ?

okay so let me say a year ago i was 87 kgs ,now am 56 kg at a height of 5'8 my period was all regular since 5 months but after that , it got a bit late then it ddnt come at all for about 2 months and now its late again and didnt come since 17/6 . the thing is am afraid of any gyno check up cause they freak me up with all sort of diseases so i would seek a help of any doctor online please .. ohh adn btw my weight dropped as i was on a very hard diet lets say starvation but now i let go just a little bit and i lets say consume 1100 calories average but i excerscise heavily though.