Is that what happens when people TTC?

Two people with whom I am close to have changed their relationships with their husbands while TTCing. I will call them A & B.

A & B both got married and wanted to start a family right away.

A tried for 1 year only to find out she had IF. One month after her lap (I believe that is what she had done) her and her H separated and eventually got divorced. 1 year after getting married.

B started trying but started having marital problems she says has turned into abusive relationship and ended up having an affair, they had been married only 9 months and yes 9 months of TTCing.

Of course there is more issues to this besides TTCing. A says her H was not there for her when she needed him and showed her no affection and B also said her H was abusive and her self esteem as been so low it made her turn to another man.

Is this what happens to couples who have trouble TTCing?

I feel lucky my DH is supportive of me, even during my craziness and obsessive calendar watching.

My heart hurts for these two close people in my life. I know deep down it is more then the TTCing part that caused these couples to not work out, but it makes me scared this will end up happening to me.

I often wonder will DH decide he had enough and leave me or not want to TTC anymore, because of the stress? I would be heart borken if we can not have another child. Also will DH stick to his guns about NO intervention such as a IUI or IVF b/c of the cost when it is time to decide on these things and again break my heart? Will this cause a problem in our relationship??

Now that my medicated cycle is starting tomorrow, I am scared that if this does not work for us, we also may end up like the two people I am close to. I highly doubt it but worrying is my nature.