While fasting I usually feel a thicker substance lingering at the back of my throat throughout the day, sometimes it comes into the mouth. Is that phlegm and if I swallow it does it break my fast? Because I sometimes find difficulty especially within the Salah and I can't find a place to spit it out

Ustadh AbdulAziz al-Haqqan

I do not know what that is. It could be phlegm and it doesn't break your fast.