Groomsmen with No bridesmaids

My Fiancé has a few guy friends/ family members that he really wants to stand with him during the ceremony. He has already asked a few and they have accepted. I think it's great that he wants to include the people close to him doesn't have to stand up there alone. But, I however don't have anyone to ask. My sister went MIA about a year ago and doesn't even know I'm engaged. I don't have any close girlfriends or guy friends and no one in my family to ask. I don't want to stand up at the alter by myself but I also don't want to ask anyone to be a bridesmaids just so I have people up there with me plus they would have the expense of dresses, etc. My mom is going to help me dress shop but she will be helping with wedding stuff while I will have to get ready for the actual wedding alone. This is weighing down on me heavily to the point where I'm not even excited to continue planning. We have set deposits already so we can't jump ship and change plans. What advice do you guys have for me? This is suppose to be an exciting and special day but I cannot hell but feeling sad when I think about it.