First things first: as everyone here can attest, you are NOT alone. When you say that your girlfriend doesn't understand, that's true. Someone who doesn't stutter can never understand what we go through. The same way we can never understand what a deaf person goes through, or a blind one, or anyone with a disability we don't have. It's really hard to stutter but like you said you have good days and bad days. And you don't understand why in some days you can't even say a sentence properly and in other days you don't even notice. No, it's not fair and no-one besides us really knows how difficult and frustrating this is. But if you really think about it you could be a lot worse, and this not me trying to do a pep talk. It's the truth. We could be a lot worse. We just have to find ways to deal with this the best way we can. I'm a 45 year old man that stuttered all my life, been in sales most of my adult life so you can imagine how difficult it is. But you learn to listen more and talk less, and observe people. If you need anyone to talk to just send me a message. At least you can talk with someone who really knows what you're going through. It doesn't need to be a full on conversation. Maybe you just need to vent something, I'll hear it, no problem. The point is: YOU ARE NOT ALONE. Edit: and this is not only for the OP. Anyone here needs to vent or just talk just send me a message. I'll reply as soon as I can. We NEED to be there for each other. 🙏🙏