The easiest way to check if your VPN is working is to open an incognito/private browsing window and search "What is my IP address" to find an IP checker. Run the test before you connect to your VPN and you'll get your real IP address. Close the incognito window and connect to your chosen VPN, then open a new incognito window and repeat the same process. If your IP is the same, you may not be connected properly or your VPN may have a DNS leak.