I was fat when I met my husband, I was fat when he married me, and I'm still fat 7 years into the marriage.
If you're looking for men that will notice you based on your BMI, you're either looking at the wrong kind of men or not looking at other aspects of yourself closely enough.
To suggest that any of us have to reach a certain BMI before we're considered attractive is insulting. I've seen plenty of women on here that are beautiful, period. To suggest otherwise sells us, and yourself, short.
No matter how slow you go, you are still lapping everybody on the couch.
Never discourage anyone...who continually makes progress, no matter how slow. -Plato