Vitro fertilization

I'm 27 and my husband 28. We have been TTC for 3 years now with no success. My second sister 24 just gave birth to a georgous baby boy. Today my dad told me to look into vitro fertilization and decided if I want to do it and how many treatments I want and he's going to pay the $15,000 for the max treatment they offer which is 3. My dad is not the type to get so personal with me. I know I should be happy but I can't help but cry. I was probably in denia with TTC and now everything is hitting me so hard all at once. I don't really have anyone to talk to or to get advice form without them judging me. Any words of advice. Please share