Yes, stretching has caused problems for me, but after a year of off and on PE, I’ve finally found a way to start stretching and still maintain a solid, blue-steel erection. Here’s what I’ve done to alleviate the problem:
I started back up in February, only doing jelqing. For me, jelqing causes my erections to be very hard. I’ve also been doing a lot of kegel work.
After a month of just jelqing, I tried some light stretching but had a little trouble maintaining my erection. I stopped stretching and went back to just jelqing. Still doing kegels.
Now, 2 months later, I’m finally able to do some light stretching. I’ve been doing JAIs, maybe 25 reps, before I go to bed (no warmup). Then, the next morning, I do my jelq routine. I’ve done this every other day this week, and I haven’t had one problem. I get this weird feeling after I stretch as if it wants to be stretched even more, but the jelqing in the morning knocks that feeling out, and things are back to normal. Plus, lots of kegels.
I think that the more conditioned your dick is through jelqing, the better it can handle stretching. Try doing a just jelqing routine for a couple of months, then start into some light stretching every other day and see what happens.