I have read your question,
PCO or (Poly-Cystic ovary) has been quite an issue to many women nowadays , It can be caused due to many reasons generally obesity or genetic reasons . But without physical examination and medical history I would not conclude any thing.
though are good i would also suggest an ovulation medicine as well (please consult your gynecologist for guidance).
Generally assurance on preganancy cannot be given accurately , due to various odds , but in your case I think There is 60% chance.though you were diagnosed with scanty fall in the right tube , Left tube if functional (since you did not provide any info related) would also increase the chances , hence never lose hope and all the best for the IUT .
Further you can also mail me for any other guidance.
I Hope this Helps ,