Heh, I was stupid enough to do almost the same as the OP.
I was masturbating myself quite a few times this last week, ejaculating even twice a day. But this Friday I had an ejaculation a little too sooner than expected while masturbating and as I was in my bedroom, I ran to the bathroom while holding.
It took no more than 4 seconds, but when I arrived, only the pre-fluids when out, the rest seemed to go back to the bladder.
Now I can't get a full erection since yesterday and it seems it would take at least another week. At least Im not having pain, it just itches a little at the tip of the penis.
But to make the recovery worse, I had a very strong diarrhea this morning ¬¬ so my entire body is weak at the moment, haha.
Accordning to professional opinions from here, must wait then. Oh well.