First and only try of Ivf my last shot

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Hi ladies! Doing my first and probably only round of ivf. Ext month. I will be 43 June 30. I have to say I’m leaning towards the side that this will not work as statistics have basically confirmed I have about a 2.8% chance of success. Also had a sonogram today and it revealed I had a blocked Fallopian tube. Question 1- has anyone got their rainbow baby on first try of IVF and 2) what does one do with a blocked Fallopian tube?