If you haven't received a booking confirmation, it could be for several reasons. The most common is that you have entered the wrong email address when booking on the travel agency's website. Then you can contact the travel agency where you bought your flight ticket directly and ask them to send it out again. 

If you do not know from which travel agency you bought your ticket, you can check with your bank to which travel agency you have paid. Another trick is to check the browser history on the computer or mobile phone where you made the purchase. Then you will see which travel agency page you have been on. 

Contact information for active travel agencies on flygresor.se can be found if you follow this link.