How to send Multiple parameters in URL of wordpress?

I want to send the multiple parameters in wordpress like

• hostname/wordpress/form/?amt=”.$amount.”&tp=”.$trans_period

is the url am calling on click of ‘anchor tag’.

but am getting the converted url in address bar as

• hostname/wordpress/form/?amt=7.99#038;tp=M

the ‘&’ is replaced with ‘#038;’
thats why am not able to get the second parameter ‘tp’