Is There Any Way To Fix S Shaped Cervix?

I have done 5 IUIs that have failed. The last one the doc was only able to get the catheter in half way and she said I have a S-Shaped cervix. She tried using a tenaculum but still could not get it in all the way. The first 4 were done at a difference facility over the weekend and none mentioned anything about a S-shaped cervix. The doctor said I would be a better candidate for IVF. Is there any way to fix the s-shaped cervix?