Feeling so lonely and isolated at graduation event

I (36F) am in a loving relationship and have had a fulfilling life, I have many friends and many things I'm thankful for.<br><br>Today my baby (14M) graduated and it was a big day for us. My husband had to go away on his private trip weeks ago and I didn't have the funds to go with him. He's one of the greatest loves of my life and I'm so incredibly grateful to be in a relationship with him, a loving husband and dad. <br><br>There were countless other parents there today, with spouses and children and extended families. Nobody took photos of me, I had to ask someone to take a photo of my son and I, which I was so grateful for. I have never been this lonely in my life. It felt like I was the only one without someone to lean on or hug. My husband and I didn't stop communicating at all, and even his absence felt so much better than this feeling of absolute loneliness. <br><br>I don't feel like we've grown apart or anything like that in our relationship. I'm not sure how to explain this ...but somehow I felt like his absence made me feel like I was just a single mom. I don't feel this way all the time. I want to share this with him but I'm just too afraid it will come across as accusatory. I wish I could go back in time and skip this whole day. God I feel so ungrateful, I have so many blessings.