Patient description: The patient is a 33-year-old woman complained of fatigue, weight gain and abnormal spotting between menses. No hirsutism or nipple discharge was detected. Her BMI was 34. Her lab results were remarkable for high TSH level (13 mU/L) and low free T4 level (0.2 ng/dl). Her anti-TPO levels were extremely high (120 IU/ml). She was diagnosed with Hashimoto's thyroiditis. Her aunt, brother and mother have the same disease. After starting 250 mcg Levothyroxine per day, her symptoms improved significantly and her periods are normal. She is still overweight with BMI of 31. Her most recent thyroid profile revealed all results except for anti-TPO within the normal range: TSH: 2.35 mU/L Free T4: 2.7 ng/dl Anti-TPO: 75 IU/ml

Clinical trial eligibility criteria: eligible ages (years): 18.0-55.0,  Endometriosis Dysmenorrhea Dyspareunia The subject has voluntarily signed the Informed Consent form after having the contents fully explained, after all questions are answered and prior to undergoing any study-related procedures The subject is a pre-menopausal female at least 18 years of age at the time of screening having regular periods (21-42 days intervals) with no menopausal symptoms The subject has a diagnosis of endometriosis made via laparoscopy or laparotomy (operative report will be obtained) and still symptomatic and at least 3 months after surgery have a grade 2 and above according to Biberoglu's pain grade at screening visit (4 weeks prior initiation of treatment) or 4 out of 10 on a visual pain scale (visual analogue) Subject in good health, except for endometriosis, or has mild medical conditions that are stable and controlled. The subject has no clinically relevant hepatic, renal, cardiovascular, respiratory, endocrine, metabolic, psychiatric, neurologic (epilepsy), hematolytic (coagulopathy) and/or immunologic disease (on steroids) or disorder A subject who has received any of the hormone therapies (GnRH agonist or danazol or progestin) must meet the minimum washout requirement to be eligible. (GnRH within the last 6 months and with steroids within the last month.) After hormonal therapy has stopped, the subject must have returned to normal for at least two menstrual cycles before baseline time Serum pregnancy and urine qualitative pregnancy tests performed at screening and on baseline must be negative Unless surgical sterile by bilateral tubal ligation or vasectomy of partner, the subject agrees to use a double-barrier method of contraception during the screening period, throughout the 24-week treatment period, such as: condom plus spermicide, diaphragm plus spermicide, sponge plus spermicide, abstinence is an acceptable form of birth control Less than grade III overweight or BMI <40 kg/M2  Less than 3 months postpartum and post-lactation at the time of dosing Abnormal laboratory findings considered clinically significant if more than twice the normal range. Abnormal tests will be repeated, and if still high as stated before, subject will be excluded A previous history of significant adverse reactions to hormone, progestin or progesterone and GnRH agonist therapies Abnormal Pap smear in the last 6 months. Subjects with ASCUS (atypical squamous cells of undetermined significance) and are negative for high-risk human papilloma virus (HPV) will be eligible. Subjects that have atypical endocervical cells, and atypical glandular cells are not eligible for this study Subject has a bone density T score less or equal to 2.5, history of nontraumatic fracture, history of spinal surgery, history of fusion of lumbar region, history of severe scoliosis greater than 20 degrees