hemorrhoids, Fissure? Getting a bit scared, can anyone help?

I'm a 50 year old male, fit, active, in good shape and I've been suffering with hemorrhoids for about 4 weeks. However in the last 10 days or so I've been suffering the most debilitating and excruciating pain, it's ruling my life, I can't work, can't make arrangements to see people because of these waves of pain that are close to making me weep. Previously I'd tried all the hemorrhoid medicines on the market (and I mean all!). Just over a week ago I saw my G.P. who told me he thought the piles didn't look so bad and he couldn't see anything else, I tried to explain the level of pain I was in and I explained that it was hurting me to poop in the morning so he said "although I can't see anything let's treat it as a fissure". He prescribed me Glyceryl Trinitrate which when I apply it maks the pain far, far worse. For over a week I have been taking baths and adding coconut oil which I read can help but things don't seem to be improving. Since I saw the doctor I inspected myself more clearly in the precise area where the pain felt like it was coming from and found this (what I can only describe as) very strange bright red tiny vein like thing. I basically know this is where the pain is coming from (the doctor hadn't spotted it). I'm now worried that it isn't a fissure at all but something more serious. I've uploaded a photo (yes, I'm that desperate), apologies if that's not appropriate on the forum but I really need some advice as this is ruining my life!

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