The follicle reduced in its size because of the rupture. There is no other way that it reduces in size.
You need to try again in the next menstrual cycle for a successful conception.
Meanwhile, you need to decrease your weight. This is the first goal in infertility treatment
. Once you reduce your weight, your hormones will come to balance, you will have regular menstrual cycles, and it will be easy for you to conceive.
Keep in regular touch with your treating doctor.
All the best.