Hello, thanks for using HCM. Lutera is an oral contraceptive made up of two active hormonal ingredients:levonorgestrel and ethinyl estradiol which are progesterone and estrogens. Lutera works by preventing ovulation and consequently prevents pregnancy. Reduction in the amount of menstrual bleeding is very possible with hormonal pills and irregularities in menstrual have been noted in some cases. However, fertility is maintain and on your part there should be no problem. On your husband s part, his fertility would not be 100% as before but if the vasectomy reversal was done accurately and within 10 years from the time of the vasectomy he still has a more than 50% chance of his initial fertility. thanks and if you do have more questions, do not hesitate.