Dealing with grief during pregnancy

My uncle passed away a couple of days ago. We were very close and a small family, he would look after me and my brothers every weekend when my mum worked. We were caring for him during the last days of his life and I watched him take his last breath. I miss him so much and I’m so sad. I keep crying and don’t have much of an appetite. I’m 20 weeks and know I have more to think about than just myself, I’m responsible for the health of this baby. Has anyone dealt with anything similar and have any tips with how to cope?