OpenGL/C++ Incorrect Pixels are Being Rendered

I've been making a basic game with OpenGL for the first time. However, I have run into a problem where when loading in a sprite and then rendering it, which is that once in a while a few extra pixels get added, where it should be transparent or showing the background.

Here is my texture code:

#include "texture.h"

#define STB_IMAGE_IMPLEMENTATION

#include "stb_image.h"
#include <iostream>

Texture::Texture()
{

}

Texture::~Texture()
{
    glDeleteTextures(1, &_texture);
}

void Texture::Init(const std::string& filename)
{
    int width, height, numComponents;
    unsigned char* data = stbi_load(filename.c_str(), &width, &height,
                                    &numComponents, 4);
    if (data == NULL)
        std::cerr << "Unable to load texture: " << filename << std::endl;

    glGenTextures(1, &_texture);
    glBindTexture(GL_TEXTURE_2D, _texture);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);

    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);

    glEnable(GL_BLEND);
    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height,
                 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
    stbi_image_free(data);
}

void Texture::Bind(unsigned int unit)
{
    glBindTexture(GL_TEXTURE_2D, _texture);
}

void Texture::DelTexture()
{
    glDeleteTextures(1, &_texture);
}