Inclusion Criteria:

• * • BMI between 30 kg/m2 and 40 kg/m
• * Weight stability, i.e. no continued weight loss of \>1lb per week for a minimum of 4 weeks prior to enrollment
• * Normal thyroid stimulating hormone (TSH) and prolactin
• * Anti-Mullerian Hormone (AMH) \> 1 ng/ml or \< 8 ng/mL
• * Willingness to postpone conception for the first study cycle
• * Involuntary inability to conceive for at least 6 months
• * No clinical diagnosis of polycystic ovarian syndrome (PCOS)
• * Documentation of ovulation with luteal progesterone \>6 ng/ml or positive ovulation predictor home testing
• * Regular menstrual cycles 25-40 days in length
• * Male partner (or sperm donor) with adequate sperm (\>14 million sperm per ml)
• * Hysterosalpingogram or saline infusion sonography demonstrating at least one patent Fallopian tube and a normal uterine cavity
• * Serum total and free testosterone within the 95% CIearance for women with obesity previously studied in our laboratory.
• * Acceptance of the indwelling catheter and willingness to take part in the study

Exclusion Criteria:

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