Related by context. Frequent words. (Click for all words.) 50 menstrual cycle 49 ovulation 48 menstrual cycles 48 perimenopausal 48 perimenopause 47 amenorrhea 47 menstruate 46 estrus 46 tamoxifen therapy 46 pregnancy 46 undergoing IVF 46 heavy menstrual bleeding 45 IUI 45 IVF cycles 45 ovulating 44 ovarian function 44 pubertal 44 antidepressant therapy 44 menopause 44 menses 43 IVF treatment 43 ovulate 43 menstruation 42 menstrual 42 postnatal 42 premenopausal 42 menarche 42 serum concentrations 42 dysmenorrhea 42 post menopausal 42 polycystic ovary syndrome 41 pre menopausal 41 copulation 41 post natal 41 oocyte 40 oral contraception 40 menstrual periods 40 coitus 40 meiosis 40 mating 40 hormonal 40 implantation 40 reproductive hormones 40 corticosterone 40 estrogen therapy 40 pregnancies 40 progesterone 40 childbearing 40 conceiving 39 vasomotor symptoms 39 PMDD 39 hormones estrogen 39 ejaculate 39 endometrial 39 hormone injections 39 penetrative sex 39 Hormonal 39 aneuploidy 39 menopausal women 39 intercourse 39 spontaneous abortions 39 prenatally 39 biochemical markers 38 menopausal hormone therapy 38 orgasms 38 reperfusion 38 fertilization 38 orgasm 38 lactation 38 screening mammogram 38 cortisol 38 cortisol levels 38 prolactin 38 screening colonoscopy 38 randomisation 38 ultrasound scans 38 trimester 38 DMPA 38 postmenopausal 38 bacterial vaginosis 38 embryogenesis 38 ejaculation 37 preconditioning 37 dopamine neurons 37 estradiol 37 calcium supplementation 37 hormone 37 Phase Ia 37 weeks gestation 37 avanafil 37 endometrium 37 Menerba 37 bulimia nervosa 37 menopausal 37 aromatase inhibitor 37 Pregnancies 37 decreased libido 37 cardiorespiratory fitness 37 matings 37 insemination 37 orgasmic