First month on Letrazole

Celeste

I'm really trying not to get too hopeful here but I've been insanely nauseated for the last week. I'm 8dpo and still have another 6-7 days until af. I know Letrazole can cause nausea, but how long into the cycle does it cause it for others on it? additionally I've been having some heartburn, gas, constipation, bloating(a lot!), aversion to certain foods and smells.