I lost my ring and can't stop crying

I am absolutely gutted. Me and my fiancée have only been engaged for a year and I really ruind everything today. I was out eating messy food so took off my ring and put it in my bag. This was so silly of me as it must not have been secure enough and must have fallen out somewhere. I am absolutely gutted. The ring meant so much to me. My fiancé is so disappointed in me and I can't stop crying. I just cant accept that it's gone. I'm especially worried as my partners parents helped pay for the ring so I have no idea how to tell them. I feel like the worst person in the world😭.

UPDATE - I wanted to thank all of you lovely and amazing people for making me feel so much better! I have found the ring! It ended up under a chair in the kitchen (not sure how) but I am so so relieved. You all made me feel so much better💕