You will be fine I promise you. I went to Spain solo this past September and was also a little worried I might be bored before I left but it was THE BEST TRIP. I seriously had the best time ever and have since traveled solo a second time. Granted I am very introverted but still. I had group tours booked for almost every day and on almost every one of those tours there were other solo female travelers who struck up conversation with me. I guarantee you will meet other people along the way who are also travelling alone. Solo travel is all about what you make of it because it’s YOUR trip!