Confused and frustrated

Jamie

We’ve been ttc for about 5 months now. I’m 36 and it’s been 8 years since my last pregnancy. My periods had been heavier and I cramped off and on all cycle long. I started taking supplements, specifically Eu Natural Conceive for woman, fish oil, and a prenatal. Since starting the Conceive (been taking for 2 months now) I’ve noticed my periods are getting much better and I haven’t noticed the consistent cramping through my cycle anymore. However this cycle particularly I only had a 9 day luteal phase which I know is considered short. Is this normal while my body adjusts to the supplements I’m taking for this to fluctuate? For example, my previous cycles were 11-13 day luteal phase, could I be hurting my chances of becoming pregnant more by taking these and messing up my cycle?? Any insight is appreciated!