Has anyone easily conceived?

I have been tracking CM, bbt, and ovulation for months. I have an extremely regular cycle, and I'm generally in-tune with my body. I go the the gym daily, and eat a healthy plant based diet. I've given up sugar, caffeine, and alcohol over the past few months.

This week is the first attempt my husband and I are TTC, but I am extremely worried and paranoid that my weight (5'2", 250lbs, just turned 30) and hypothyroidism are going to greatly affect my ability to conceive. I know stress won't help, but I was wondering if anyone had an encouraging story to share.