Break up

Currently going through a break up. It’s messing with me so bad. I noticed today when I looked at my phone and it was 9pm and I haven’t moved from bed. I don’t want to fall into depression and drinking but I sort of feel like I’m losing myself it sucks so bad. It’s hard to eat because I’m just nauseous with no appetite. So any advice? What to do, Is there anything I can take to make me be able to eat? How to handle this better than I am ... ☹️