Dear adityakedia87
Thanks for using Microsoft products and posting in the community.
I sympathize with what you're going through, and I can understand your fear.
But don't worry, we've found out that a lot of hackers are doing this nowadays, which has led to users coming back to us with this information.
Let's confirm the information of your email, you can follow the steps below:1 Select the email, click on the “...” of the email.
2 Select “View”, “View Email Source”.
3 In the email source, find the location of the following picture, this is the original IP and sender.

You can check if it's your mailbox information, if it is, it means your account may be hacked, you need to change your mailbox password, and then check if there is any abnormal rule or whether it's set to forward to the mailbox you don't know.
If your mailbox is outlook mailbox, you can log in your account on web account.Microsoft.com, then click security-view login information, check whether there is any abnormal login information, if there is, you can take the way to improve the security level of your account, use Microsoft Authenticator and 2FA to protect the security of your account.
Download Microsoft Authenticator - Microsoft Support
I hope the above information can help you.
Looking forward to your reply.
Best wishes
Clark | Microsoft Community Support Specialist