ED at 18? should I see a doctor or can I fix this?

[Youtube133]

I just turned 18 years old last month and Ive had  a serious girlfriend for a little while now. I really love her. I didn't do anything sexual pior to this relationship so I was egar to get the ball rolling. At the start everything was great I learned everything pretty quickly and i was doing great at pleasing my gf through oral, ect. Shes not big on blow jobs but whatever I was getting HJs and the odd ** and everything was great. Then I was given the go ahead for sex. A few days ago I went over and we got naked and I just couldn't get hard she was playing with me and i just couldnt do it. I was a little nervous but i was pretty comfortable around her idk what was going on. Anyway i then got 2 HJs that day. Then went over the next day and I was having trouble getting hard but then i did and she was playing with me. Then i could feel my errection going away so I just kinda gave up and ended up blubbering to her like a boodly girl. Shes really understanding about it and said its not that big of a deal. But deep down isnt it a big deal? Idk its been really depressing and i dont know what to do.

A little background information... Ive been jerking off since i could remember. I used to do it weird ways when i was a kid but eventually went to the traditional way. Before i even meet this girl i had stumbled upon porn EDs on the internet and i was looking stuff up contantly about it. I was worried i had one before i even did anything sexually. When we starting getting sexual i quit porn for the most part only masterbaiting once or twice with a condom on because i read somewhere thats a good idea. However this has really only been 2 weeks onlying watching it twice so thats not very long i guess. Plus ive been getting a crazy amount of HJs. In which I bust within 2-5 minutes. I notice im not really able to get hard to well just using my mind but i feel like all this stuff in the back of my head doesnt help. But i can usually easily get hard around her no problem .I'm circumcised and i noticed a bit of discoloration on my penis. I fear maybe its nerve damage or something affecting my sensitivity. Also i was sick a few days ago and lost 7 or 8 pounds. I'm an athlete in baseball in hockey so im in fairly good shape. So i dont know what to do. Is there something wrong with me? Am I screwed for life? Do i need to see a doctor, would vigara or something work? I'm only 18 why does this have to happen to me. I really don't want to lose this girl. Or maybe its only been twice maybe its in my head. Please any help would be great.

[Harv_c]

Some of this came from you being anxious about your performance, since the same day you were able to get hard and ejaculate twice thereafter.  But mostly this is coming from porn and how you have excited yourself over the years.  If you want to improve, drop the porn 100%, do not ejaculate from HJs or masturbation.  Save it all for the occasion.  
This will not be fixed over night.  The affect of porn on what excites you will take a while to be eliminated.
Lastly, recognize what excites you, like HJs in some manner does, and use it within your sex play without ejaculating.  You should learn that women take time and stimulation to be ready for penetration and for a while you will need this too.

[jizmore]

"anything sexual" absolutely includes masturbating to porn, a frequent cause of ED in teens.

take a break from porn for a few months, and masturbate fewer times while fantasizing.