Letrozole symptoms or..??

I KNOW I shouldn’t be symptom spotting but I just can’t help it. I’m gassy/burpy, cramping mildly, mildly nauseous, dizzy, exhausted but have insomnia, peeing all the freaking time, and am constipated. I’m anywhere from 8-10dpo. I didn’t use opks, we just bded a few times throughout my fertile week cd 10-13. I took letrozole cd 3-7. Are these just letrozole symptoms or could they possibly be bfp symptoms?

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