A friend of mine suffered an ectopic pregnancy in her right fallopian tube. After she started experiencing excruciating pain and expelling black blood, she went to the ER where she was diagnosed with a tubal pregnancy. Doctors decided the best approach was to operate there and then. Since her ectopic pregnancy, she only has one fallopian tube left yet it took her only six months to conceive her son (and she was not even aware of when she was ovulating!), and is now expecting her second. This is little more than anecdotal evidence, of course, but my friend's story might give hope to women who are in a similar situation.
When you have one functioning fallopian tube and are tracking your ovulation with the help of easily accessible tools like ovulation calendars, looking at your cervical mucus, charting to conceive, and ovulation tests, there is no reason to assume that you will have difficulty getting pregnant. Talking to your doctor about your reproductive health and the health of your ovaries may reassure you, or may make fertility treatments like IUI more easy to obtain, should you need them for some reason. Women with one fallopian tube can further increase their odds of getting pregnant through eating healthily, taking a prenatal supplement, and exercising regularly just like women with two working fallopian tubes.