TTC is ruining me.

I have been trying so hard to reduce stress, eat healthy, remain positive and exercise. All while taking supplements and extra water and just trying to keep my body in the best shape possible to conceive. It just isn't happening. The pain is weighing on my husband and I and it's beginning to take a toll on our relationship. I don't understand why this has to be so hard. I always dreamed of being a mother, and I never ever saw myself in this position. Trying so hard to conceive a child when everyone else around seems to be announcing pregnancies every single day. Why me? Why... I'll never understand.