I want you to read these answers on this site and you will get lot of information regarding your question and also some other things.

What Are The Application Status Meaning Qatar Airways Website?

https://jobsadvisorqa.com/questions/question/what-are-the-application-status-meaning-qatar-airways-website

No Reply/Response From Qatar Airways After Receiving Offer Letter / Ticket / Visa?

https://jobsadvisorqa.com/questions/question/no-reply-response-from-qatar-airways-after-receiving-offer-letter-ticket-visa

Come back to your question. Its normal don’t worry just pack your things and get ready for that.