How to heal from a heartbreak 💔

It’s 1 week and a half since I found out the person I’ve been seeing, got his friend pregnant and I still have no appetite. I can’t believe this hit me so hard I have no desire to eat I only eat a little because I know that I should but after one bite I am disgusted. I’m literally losing weight I know cause I have a weighing scale but omg how long does it take to recover from this ❤️‍🩹 not being able to eat after feeling betrayed has never happened to me before how do you cope with this. I already suffer from anxiety and randomly have breakdowns, I take citalophram sometimes but I feel like this situation made things worse