I am 78 and have retrograde ejaculation

I am a 78-year-old man and have been having consistently dry retrograde ejaculations since 1986, when I had TUR surgery.  I am sexually active with a 28-year-old female partner who is not on the pill and does not wish to be.  She and I do not wish to have children from our relationship, but we both find sex with a condom difficult and unsatisfactory.  What are the chances of her falling pregnant if we practise unprotected sex, given my age and my consistently retrograde ejaculations?

[UnBreatheMe]

God bless man!!! Your 78 and still shooting? Amen!

[fidelio702]

After reading your post in this rainy winter day in Melbourne, Australia, you have just made my day jejee. I admire your positive view of life and I will try to follow your example. I am a 70 years old man, in a semiretired situation, currently in a relationship with a 20 years old girl living at the other end of the world but mutually engaged. I am she is coming to live with me soon and yesterday told me she wants to have 2 children. Ten years ago, i had TUR surgery and have have noticed that despite its obvious limitations, when i ejaculate , some semen always come out. Please give ideas on how to satisfy my girl friend desired fertility and how do you OPTIMIZE your sex power ( CIALIS ??? VIAGRA ?? or NATURE ?)
I wish to have the chance to exchange continous views about our similar experience  MY CONGRATULATIONS TO YOU  , AGAIN