I feel good on 100mg per week of Testosterone enanthate without AI or HCG.

What are the risks of running test only TRT?
If I decide to have children, can i start taking HCG to then attempt to have children?

I dont see my doc for another couple of months as he is a plane ride away.
I will ask my doc all these things when I see him but for now I was wondering if anyone had any advice?