Chryse,
If you are using Apple, this is a frequent problem. There is a Mac group here on WikiTree - I don't recall the URL of their page, but you can search G2G to find several previous instances of this question, where their members have provided solutions. You should be able to find the group's page in the Help Index. If you ask someone there, they will be able to tell you how to fix it.
If you are using Windows then the solution is to use a graphic editing program to rotate the image to the correct orientation, then save it, and then upload it. If you disconnect all pages from the incorrect image then it will immediately disappear from view and eventually will be deleted completely.
-- Edited to add:
The link in your question to your own profile displays only the thumbnail because of your privacy settings. That image appears to be properly oriented.