Related by context. Frequent words. (Click for all words.) 55 penetrative sex 52 heterosexual intercourse 51 genital tract 50 anal intercourse 49 vaginal intercourse 49 unprotected anal sex 49 HPV infections 47 unprotected sexual intercourse 47 intercourse 46 vaginal secretions 46 HPV# 46 bacterial vaginosis 45 orgasms 45 sexually active 45 immunologically 44 hiv 44 anal sex 44 sexually transmitted 44 STDs 44 hormonal contraception 44 candidiasis 43 sexual intercourse 43 ejaculation 43 sexually transmitted infection 42 ejaculate 42 heterosexual males 42 sexually transmitted infections 42 unprotected intercourse 42 hermaphrodites 42 oral contraception 42 heterosexual 42 menses 42 symptomatology 42 genital organs 41 menstruate 41 progestogen 41 HPV infection 41 generalizable 41 Physiologically 41 urinary symptoms 41 cunnilingus 41 reinfection 41 HIV infection 41 transiently 41 physiologically 41 STIs 40 multiple orgasms 40 Chlamydia trachomatis 40 unprotected sex 40 pelvic inflammatory disease 40 spermatozoa 40 monogamous relationship 40 menstrual pain 40 intramuscular injections 40 cervical dysplasia 40 reproductive hormones 40 coitus 40 adolescent males 39 copulation 39 valacyclovir 39 BRCA2 mutations 39 remain abstinent 39 adjuvanted vaccine 39 antiviral therapy 39 migraineurs 39 Pheromones 39 anal penetration 39 vaginal infections 39 HIV diagnoses 39 CMV infection 39 amenorrhea 39 virginity pledges 39 heterosexuals 39 pulmonary TB 39 sexually transmitted diseases 39 masturbation 39 sexually transmitted infections STIs 39 monogamous relationships 39 HAART 39 vaginas 39 gonorrhea 39 vaginal deliveries 39 pre cancerous lesions 39 prostatitis 39 oral contraceptive pill 39 syphilis 39 HCV infected 38 females 38 orgasm 38 LAIV 38 virologic failure 38 ovulating 38 osteoporotic fractures 38 seroconversion 38 herpes simplex 38 Chlamydia 38 heterosexual marriages 38 copulate 38 vaginal atrophy 38 antidepressant therapy 38 asexual reproduction