giving up on 2nd baby

My husband and I have been trying for the last 6 years to have another baby.  Our insurance wouldn't cover infertility and now we are basically faced with having just one child.   We have tried the evelate the bottom after,  counting the 14 days from start of period for ovulation, even did the ovulation testing.  What is there left to try!? Other than have fun but be sad and depressed at the same time.