To go down the road of IVF

As my husband and I continue to try to naturally conceive our baby I am slowly coming to the realization and acceptance that we may have to do IVF. After all the pre testing the determination Is that one tube maybe blocked or the test may be in accurate due to human error...all the other tests (i.e. ovulation, egg count/probable egg quality, sperm) looked appropriate, healthy and normal. We have opted to attempt 2 more cycles of Clomid (we tried 4 cycles prior to going to fertility doctor), we are using ovulation testing kits and praying for our baby to happen. My doctors RN was ready to coordinate the IVF process and I am not ready...there is a level of finality that goes along with this that only a woman going through the same thing can understand. My husband is supportive but doesn't fully get the emotional, mental drain on me. Do we try for 2 months, 6 months, when do u submit to IVF as an opportunity because right now in my mind it is a last resort. I feel lost, heartbroken and I know I need to reach a level of acceptance but I still pray each day for a natural pregnancy. I guess my ambivalence relates to the fact that I never saw this challenge...not being able to conceive as a problem I would ever face. I thought I was responsible, waiting for the right man, healthy and here I am more ready now than ever and it just...wont...happen. I will keep positive and open to accept what is meant for my husband and I. But how do I move forward in the future with IVF. And yes I want a child but I question if I am able to go through with it.