Strange reasoning

This sounds morbid, I admit, but sometimes I think the reason I can't get pregnant is because that's my body's way of telling me that I'm not strong enough to carry a baby..or that something tragic will either happen to myself or my baby during pregnancy or even delivery. I'm not superstitious and I know that made me sound it but it's thoughts I have when I'm extremely discouraged. Can anyone else relate?

Edit: I have been tracking ovulation and have fallen pregnant a few times but unsuccessful pregnancies. I've had tests and vaginal sonograms and everything on my end is fine! My husband has had his sperm counted and it's a healthy number. Just unexplainable as to why I can't keep them. Our next option is IVF which we can't afford at the moment.