Need advice.

So I'm so torn between having another child and not having one yet. I only have one beautiful baby boy. He is my miracle baby. It took everything I had to get pregnant with him. I have had 7 miscarriages and one molar pregnancy to have him. I got pregnant with Ethan during a spontaneous trip to Nevada. Apparently my body likes the altitude in some way. Sure before and even after it's been hard to have another. And I can't take anything like birth control due to it making it even harder to get pregnant afterward getting off of it. But me and my husband took another trip a two weeks ago to Nevada and of course part of me is like sweet maybe I'll get pregnant again but here is the other part. My husband and I aren't on the best terms right now and I don't want to be pregnant right now but than again I'm like this might be my only chance.

What to do or think. I'm stressing bad