Unity 2d_ Constant Player movement along the x axis

The movement of my player depends on swipes,

swipe left-> character moves to the left

swipe right-> character moves to the right

right now i am only getting a small movement, meaning that the player moves along the X axis but it stops inmediatelly. This is the code i have to check the swipes direction:

PLayer.cs:

public Vector2 desiredPosition;

void Update()
{
    if (MobileInput.Instance.SwipeIzquierda)
    {
        desiredPosition += Vector2.left; 
    }
    if (MobileInput.Instance.SwipeDerecha)
    {
        desiredPosition += Vector2.right;
    }

    transform.position. = Vector2.MoveTowards(transform.position, desiredPosition, moveSpeed * Time.deltaTime);

In the MobileInput script i control the swipes:

private const float DEADZONE = 100.0f;
public static MobileInput Instance { set; get; }
private bool swipeIzquierda, swipeDerecha, swipeAbajo, swipeArriba;
private Vector2 swipePuntoAhora, touchComienzo;

public bool SwipeIzquierda { get { return swipeIzquierda; } }
public bool SwipeDerecha { get { return swipeDerecha; } }
public bool SwipeArriba { get { return swipeArriba; } }
public bool SwipeAbajo { get { return swipeAbajo; } }

private void Awake()
{
    Instance = this;
}

// Use this for initialization
void Start () {

}

// Update is called once per frame
private void Update () {

    Debug.Log(SwipeIzquierda);


    swipeDerecha = swipeIzquierda = false;

    #region Input Pc
    if (Input.GetMouseButtonDown(0))
    {
        touchComienzo = Input.mousePosition;
    }
    else if(Input.GetMouseButtonDown(0))
    {
        touchComienzo = swipePuntoAhora = Vector2.zero;
    }
    #endregion

    #region Mobile Input
    if (Input.touches.Length != 0)
    {
        Debug.Log("hola");
        if (Input.touches[0].phase == TouchPhase.Began)
        {
            touchComienzo = Input.mousePosition;
        }

        else if (Input.touches[0].phase == TouchPhase.Ended || Input.touches[0].phase == TouchPhase.Canceled)
        {
            touchComienzo = swipePuntoAhora = Vector2.zero;
        }
    }
    #endregion

    #region Calcular distancia

    swipePuntoAhora = Vector2.zero;
    if (touchComienzo != Vector2.zero)
    {
        //Mobile
        if (Input.touches.Length != 0)
        {
            swipePuntoAhora = Input.touches[0].position - touchComienzo;
        }
        //PC
        else if (Input.GetMouseButton(0))
        {
            swipePuntoAhora = (Vector2)Input.mousePosition - touchComienzo;
        }
    }

    #endregion

    #region Calcular DEadzone del swipe

    if (swipePuntoAhora.magnitude > DEADZONE)
    {
        float x = swipePuntoAhora.x;
        float y = swipePuntoAhora.y;

        if (Mathf.Abs(x) > Mathf.Abs(y))
        {
            //Izquierda o Derecha
            if (x < 0)
            {
                swipeIzquierda = true;
            }
            else
            {
                swipeDerecha = true;
            }
        }
        else
        {
            //Arriba o Abajo
            if (y < 0)
            {
                swipeAbajo = true;
            }
            else
            {
                swipeArriba = true;
            }

        }

        touchComienzo = swipePuntoAhora = Vector2.zero;
    }

    #endregion
}

The goal of all of this is to:

If i swipe to te right, the player starts to walk to the right AND continues doing so unless i swipe to the left, only then the player starts to move to the left. I want the movement to be constant in one direction until the other swipe changes it

Any help with this will be really appreciated