Yellow Discharge?!? Please help

Hi guys, i’ve been concerned for a while about my discharge. It’s a lot, usually milky and either white, or a light yellow color(can look dark yellow in certain lights).I have been tested for chlamydia, ghonnorea and trich. I have also used bc pills and when it first started, medicine for yeast infections. My Gyno said I was fine, since there is no smell or pain or itch, however i’ve still been stressing. It has almost been a year and am concerned after doctors appointments and medicine. If it helps, my boyfriend finishes in me, so maybe that could be it? I am also not on birth control so I don’t ovulate. It But when it first started, he didn’t finish in me. I am just concerned since it is so much and weirdly colored. Please help!! In this picture, it looks white but is actually light yellow, I wanted to show consistency.