FSH level on Cd 2 vs. Cd 3...??

I got 6.7 on CD2 last month (November cycle) and 14.7 on CD3 this past month (December cycle). Drastically different results and one is significantly more worrisome than the other :/ has this ever happened to anyone else? Also, if my level really is 14.7 is that too high? My AMH is 1.44 (which is considered normal). I am 34 years old. I’ve had 1 MC at 8 weeks and 1 chemical in the year we’ve been trying. Thoughts?!?!