Suspected Gonorrhea, but not sure?

[Jack76]

I am thinking that I may have caught Gonorrhea, as after looking up my symptoms, its largely, a green discharge especially in the mornings from overnight.

The tip of the penis always seems wet, with some off-white discharge during the day.

The thing is, if it is, I am not sure how I got it? I have the same partner for over 5 years, with no trouble, and suddenly I seem to have caught it.

Can this only be caught sexually, as I am 100% sure she wouldn't have slept with anyone else to catch it.

I am obviously going to the GP to get diagnosed but thought i'd ask on the forum.

Also sure that I had this as a teenager, went to a clinic, and they gave me a certain antibiotic at the time which it cleared up.

Now almost 30 years gap later it seems to be back. Just not sure how I caught it, and if there are the same or better antibiotics to clear this up once and for all?