birth control
"This medicine didn't make me gain weight or give me terrible mood swings, however, it gave me awful dryness "down there." This started approximately two an a half months in, during the pack where things got regular and I got my period on schedule.  There was literally nothing at all being produced down there and sex was impossible. The times I tried, I ended up with abrasions and irritation for days afterward (even with lubricant), and became afraid to even do it, which defeats the purpose of birth control. The periods were very light and painless but it totally ruined my sex life."