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Dear Sarah,
On a given cycle, yes having 1 tube compared to having 2 tubes would decrease your chance of getting pregnant but over a couple of cycles your chances are good. Yes, in the vast majority of cycles you ovulate on one side only. Clomid may occasionally stimulate more than one egg to develop so it may slightly increase your chance of ovulating on each side. It will not make you ovulate on the side with the good tube preferentially though. Yes, it is possible to ovulate on one side and the other tube pick it up but not felt to be very common. Pregnancy depends on a lot of factors and if the only condition is a blocked tube than either IUI or IVF would be effective. Since IUI is much less invasive and expensive it is typically recommended first.
This information is provided for general medical education purposes only. Please consult your physician for diagnostic and treatment options pertaining to your specific medical condition.
Keyword: infertility, tubal factor