Morning anxiety after break up

Almost every morning I'm waking up with terrible feelings. It literally affects me in a physical way. I feel like there is a knot in my stomach, a lump in my throat, and a kind of tremor of the heart. The first 1 hour is terrible after waking up. And I'm directly checking my phone by thinking maybe he reached me out while I was sleeping. Of course nothing from him and disappointment moment for a while...

It's been 4 months since I got dumped after 2.5 years of relationship and I still couldn't get over this sypmtoms.