Chlamydia is rampant, and if left untreated, it (and less-common gonorrhea) can lead to pelvic inflammatory disease, which scars the fallopian tubes so your eggs can't get to the uterus. Docs in Canada have also seen superbug gonorrhea that many antibiotics can't cure—gulp. Ask your guy to be tested for all STDs before going latex-free.
Every time you take a drag of a cigarette, your eggs die a little faster. In fact, smokers can start menopause up to four years earlier than nonsmokers and, if they do get pregnant, have more miscarriages and underweight babies. If you want kids and quit now, you can be back to prime baby-making status in about a year.