Please be gentle with me, since this is a somewhat sensitive area (no pun intended).

Because of some medication I am taking, I am having erection problems - sometimes they don't come at all, sometimes they peter out (haha), and they virtually all die out completely seconds after I orgasm, which is usually pretty soon since we deliberately wait for 3-5 days between sessions for reasons that will become apparent below.

I am thinking of experimenting with a cock ring - I don't want to go for yet another medication (Viagra, Evitra) to fix the problem of one medication just yet.
A wrinkle in all this is that we are trying to get pregnant. Is there a cock ring that keeps the blood in the erectile tissue while still allowing for me to ejaculate into my gal?

Any feedback here on the board would be appreciated. Many thanks.