I'm not for sure what happened, but i sat on my bed for a few sobbing and making a wheezing sound. Was this a meltdown or a panic attack?

Honestly? That's too little information to be able to define the experience you just had. Panic attacks have a myriad of revolving different symptoms, as does having a melt down. Honestly, in some ways, they can be considered one in the same, or linked, depending on the severity of the situation. If you found yourself in a place where you couldn't control how you felt, overwhelmed, which affected your breathing, heart rate, or dysphoria, I would honestly point more towards a panic attack, or an anxiety attack (Which should not be discounted since it isn't the same thing) that may have affected you.

It sounds like you may have had a breakdown. Sometimes the subconscious has hidden emotions that it needs to express and being alone can feel like a good time to express it, hence why you aren't sure what happened. Sometimes the tears just flow as a form of expression, and when it gets heavier, wheezing can come as your body tries to catch its breath and calm down. Panic attacks are different for everyone, but normally they are more extreme and can leave a person feeling dizzy, nauseas, faint, or with a sense of terror. The symptoms can range from minor to extreme.

First of all , there's nothing wrong with venting like that. It happens usually when your mind has taken enough of all what's going on and it's basically your subconscious telling you that you need a break. Secondly, although I feel like it looks like you had a mental meltdown because of stress, thoughts , or something like that , but still if you felt like you were having a kind of chest pains, any ache or stiffness of neck muscles, it might be a possibility that is more a panick attack. But if you simply felt overwhelmed by your current state of mind and wanted to let it all out , or couldn't simply help but cry for a bit, it was a meltdown , as you said. And having a meltdown or feeling overwhelmed , even without a specific cause , is always okey. If you feel like it was a panic attack , or if you still want reassurance and help, I'd suggest.m talking to a loved ones. A friend or a family member. Also , you're welcome to text any listener here and we'd be happy to help. Hope you get better soon.