Yes Novadele is right with the link for the ticker
I have found Low carbing the easiest way for me to lose weight. I've learned it helps with increasing fertility too because it lowers blood sugar and the risks associated with it such as diabetes and PCOS. Avoiding carbs as much as possible also help with increasing hormones linked ot the reproductive system.
I am obese too and was over 300lbs at the end of this last pregnancy. I am currently down to 229 now. I've lost 47lbs since January and 77 since October when I gave birth. I have been charting to monitor my cycles and to see if i am ovulating again yet before we TTC again. My last cycle was annovulatory so I am anxious to see if my hormones arenormalizing yet or not.
Good Luck and