I did MS and IVF in Guadalajara Mexico this last month. I am now 6 weeks pregnant. I guess I had a 95% girl sort and I will officially find out for sure if it's a girl in a month when I do CVS. I went through Instituto Vida and had Dr. Perez Luna. I really have all good things to say about my experience. The clinic was so nice and I loved the city. It cost $4000 plus meds for the IVF with no hidden costs and this includes freezing embryos for a year. The MS portion is $1200. I have not heard of anyone getting pregnant with just MS/IUI in a long time because of the reasons you stated above. Good luck on your journey.
Congrats on your pregnancy!! Thanks so much for letting me know your story and I really hope you have a little girl on board! x