Complusive planner

Is anyone else the type that HAS to have a plan for everything and if you don't have a set time and date you can't function? Because I am and always have been. I'm getting married in a few months(I hope) and literally have nothing planned I don't know when or where the wedding will be, who's in the wedding party, the photographer, and I don't have my dress😕. The reason for all that is because we don't have a house yet and have been looking for 4 months straight. My future in laws and fiance say things will work out and I just want to tell them to shut up because to me nothing will fall into place because theres no deadline or set plan. The whole situation makes me want to cry and I can't talk to any of them because they just don't understand.