My pee smells really bad sometimes! HELP

sometimes in the morning or when I haven't peeped in a while my pee stinks😷 and is a little more yellowish then normal ig. About the only time it doesn't stink un normal is when I drink a lot of water and it comes out the right color! Help!? I can't afford to go to the doctor right now. I did have a yeast infection about 3 yrs ago and it cleared up but after a few months it started my pee started to smell again and I discharge so much! Sometimes clearly and slimy or just white and thickish! That's normal right?!