Infertility can certainly be a great cross to bear. We pray for you and your struggles and encourage you to call on the saints for their intercession in your time of struggle.
Catholic and Infertile offers online support.
This USCCB resource page has information about reproductive technology and Church teaching.
Dr. Mary Ann Sorra, MD works with NaPro Technology in her practice, Natural Fertility Care, at St. Agnes Hospital.
Some helpful articles:
"Struggles with Infertility among Catholics" by Erin Stoyel-Mulholland