Enlarged prostate?

Hi I am wondering if I have an enlarged prostate.

Most of the time, my urination is effortless, but every once and a while (especially in the morning), it feels like something is pinching off the flow slightly. I have to push the urine out.

As I said, this is mostly in the morning, but definitely happens during the day at times. I also notice that during this time, my penis is um... not completely flaccid, yet not erect. Kind of in the middle.

I always thought that when you started to get an erection, it was hard to pee. Is this true? Maybe this is all that's happening, but I think it's more than that.

Thanks