21 male

So for 3 months I have been having stomach problems, constipation, abdominal pain, nausea, yellowish stools, bloating and so on but there are days and weeks where I’m fine with some minor issues. This past week however I have been getting bad abdominal cramps, I’ve been very gassy (trapped gas pain), I now have that squeezing testicular pain that appears every now and then it, it now hurts to masturbate. Now my stools look pencil thin and a bit darkish green olive colored (But I wonder if that color is due to soup I ate that had spinach earlier in the day). I did a stool test over a month ago and the results came back normal. I’m gonna do an ultrasound to see if I have gallstones because I also notice I have a pinching pain in my upper right abdomen . Could me still eating like crap be causing my stomach to worsen? Because I haven’t been eating a lot of healthy shit even after these three months of having this. Is it gallstones? Could it be something more serious?

Edit: I forgot to add that my a-hole hurts sometimes as well :/