Thank you guys for all the contributions. We have tried OI, and IUI multiple times and it failed. we also did IVF and it failed. We can't however adopt a child here as we won't qualify, surrogacy involves money and for now, I can't bear the financing either IVF for her or surrogacy.
I can't force someone to talk if she intends to keep malice, refusing to eat and wouldn't listen.
I will make a plan for is to come home and hopefully she will get some space. My problem with coming home is my parents, am sure if any parent hears the full story of which they are not aware of before, they would not be understanding and things could become worse

Thank you all for all these great advice

Oblongata:
May the grace of God abide with you...

You need to do a lot of work on your wife.

Calm her and reassure her of your love.

Let her know you will always be by her no matter her medical condition.

Kiss her, cherish her, make sweet love to her...

Let her know that there is a lot to live for, not just to give birth...

Let her know adoption is an option.

Above all, be strong for her and let God lead the way.

It is well with you

Thank you very much for this.
I have tried this, but the fact is that shes now unreasonable. Whenever she is angry, she doesnt care of the consequences. She can keep malice for a long time and go several days in the house without even preparing food for us. I dont think she enjoy sex even, because there was a time a doctor gave her some drugs and then we had sex in which she participated. That was when I discovered that I have suffered sexually for several years. I have high blood pressure and I don't want to slump and die suddenly. I have invested so much in myself and I want to fulfil purpose. THats the situation, she doesnt agree to her errors.

This is what is happening to me presently,

I have been married for about 8 years. I live with my wife in Botswana, we are both Nigerians
My wife has a medical condition and we have no kids yet. We have consulted one of the best gynaecologist in the country and have done a few medical intervention but all failed. In a bid to generate more money, I ventured into a business which failed woefully and this has made our life difficult.
The financial tension causes friction and frequent disagreement between us. Whenever I try to correct my wife, I find it difficult as she questions me on what gives me the right that my opinion is the correct one. I will just give 2 instances,
There was a time we had another argument and we did not talk for 5 days, she called her father to buy her air ticket that she wants to come to Nigeria or otherwise it is her corpse that will be sent to them.
Another thing happened during an argument, I called her father and reported her to him. The father talked harshly to her. My wife told the father that if she dies it is my fault. While I was still on the phone with the father, she drank bleach and its only by God's grace that I discovered on time.
Now, my own parents already know that shes the one with medical condition which is causing delay with us having children and they are really giving me pressures.
I am really having a mid-life crisis, please what will you do in this situation?