So i thought couch to 5k was safe for everyone?!!..
been following it to the letter and did my fourth run today. After googling, it appears i have 3 different types of injury coming despite going really slowly..pain in left heel, runners knee and pain in the inside of the knees. Oh and i bought really good trainers before starting to make sure i didnt get injured. Also the app says nothing about stretching just brisk walking to warm up and down.
Welcome to the forum and well done on getting started.
Google is great.........it helps many people discover this supportive forum as well as search for symptoms of possible injury.
If you read this guide to the plan healthunlocked.com/couchto5... it offers advice on the aches and pains that anyone starting a new exercise regime is going to be susceptible to, how to deal with those pains and injuries should they occur, including recommended stretching and exercises.
Did you have a gait analysis done prior to buying your shoes?
If not, then it is possible that they may be totally inappropriate for your running style.
Most people feel some discomfort for the first few weeks, but very few actually get injured in four workouts.
Are you running slow enough to be able to hold a clear ungasping conversation as you run? If not you are going too fast.
Have you observed the rest days? They are crucial.
The level of fitness that you bring to the process has a major bearing on your susceptibility to injury, but if "followed to the letter" the risk is minimal. Nothing in this world is guaranteed and staying injury free through the process of learning to run falls firmly into that camp.
Rest up and try again, maybe a bit slower, as it is the impact that causes the problems for most new runners.
It is very difficult to know if you are running slow enough to have an ungasping conversation when you run on your own. Not all of us have the luxury of a running partner and especially not one that is happy to run at snail pace 
I talk to the sheep I pass by, just to prove I can. Really scintillating stuff like “hi sheep. How are ewe? I can talk while jogging” 🙂
Unfortunately there are none of those on my runs. Closest I get is telling drivers they shouldn't be lazy b****rs and should walk, when I have to stop at road I have to cross
If you can sing to yourself you could talk to someone else. If you sing as badly as I do, you’ll probably want to do it quietly !
You don't need a running partner to chat with to test your pace, I talk out loud to myself to see if I can hold a conversation - it worked fine, and still does! Happy runnin' 🙂
If there is nobody there, talk to yourself, just until you can recognise that pace.
IannodaTruffe has given you some sound advice...aches and pains are common with any new exercise.... and it is unlikely that serious injury has occurred.
Follow the advice for stretching and the exercises recommended.. rest up and then head out again.
Sorry to hear of your anger, frustration and woes.
A 5 minute brisk walk is more than sufficient for a beginner to warm-up prior to starting a series of 1 minute jogs (and I use the word jog very deliberately).
Are you 100% sure they are 'injuries' and not just aches and pains?
Also, how fast are you going? Are you keep your pace to a gentle, slow jog? A speed at which you can hold a conversation at?
Sorry to break it to you but it's gonna hurt, you'll probably get pain your shins too. If you are going from none/very little exercise then your body needs to adjust to this and you will need to build up strength and endurance to become a runner. Most of it will be aches and soreness that will wear off the longer you do this and the fitter you become I remember sitting with ice packs on my shins when I first started, unfortunately you just need to suffer through it in the early stages.
There are good points about running gait and slowing down. I was careful about new trainers following advice on here. If I had got the oft recommended asics, I reckon I would have had heel pain and blisters as they have hard backs and sides that would have caused me issues and I found a fab pair of saucony trainers perfect for me. I get some tenderness at lower shin but it wears off as I warm up. I have also had the odd bit of left knee pain/niggle but its never been more than that. Consider doing some strengthening exercises and if it feels that bad, Rest, Ice, Elevate. Any new form of exercise will cause pain. Consider if its actually an injury or your body just saying 'ow! what is this new exercise??!'.
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Disappointed and frustrated
