Get a couple of standard kits, use first morning pee, and hope for a strong line! I got a dark positive super early and turned out I was having twins, so prepare yourself!
Please buy a proper pregnancy kit from a pharmacy and use first morning urine. Avoid trying home remedies like salt or sugar tests, they are not reliable and can cause unnecessary anxiety.
Using a standard test kit from the chemist is the easiest way. Since you are checking, also try to cut down on extra sugary teas and sweets from now itself just to be safe.
Just purchase a standard OTC kit like Prega News and follow the instructions on the packet. If it shows two lines, schedule a doctor's visit to confirm properly.