You can manually derive it using HCP's fork of IanColeman's BIP39 tool that supports Electrum seed, use an "Air-Gap" PC if you wish to do it safely.
Link: https://github.com/HardCorePawn/electrumBIP39
Download it with: "Code->Download Zip", then extract and open "electrum-standalone.html" with your browser.

In the tool:

• Paste your Electrum seed in "BIP39 Mnemonic" field.
• Scroll-down and select "BIP32" tab.
• In the "BIP32 Derivation Path";
  keep the default m/0 if your address is legacy;
  but if it's native SegWit, edit it to: m/0'/0
• Now to the important part: Scroll-down till you see "Show" 20 "More Rows", "starting from index";
  Edit "20" to "1000" and fill-in starting from index to something like "49995", then click "more rows".
• After that, it will show your addresses at index 49995 to 50995

Then you can either check those addresses' balance using a blockexplorer or import those to Electrum via "Import bitcoin addresses or private keys" new wallet option.
For the latter, don't import more than 1000 addresses/prvKeys per wallet.