FSH high

Jennifer

I’m 31 y/o this year. I have cycles every 22-27 days but have had a 19 and 14 cycle in the last year. The 14 day cycle prompted me to go back to my gyno. He ran my TSH, Prolactin and FSH again ( they were all normal summer of 2018). My FSH came back 75 this time. I’m waiting to hear back from him and it’s driving my nerves nuts in the meantime. He did NOT draw my FSH during cycle day 1-3 like I’ve read you should, it was around cycle day 20. Anyone get false highs due to one off cycle or because of when the blood was drawn during the cycle?