Blood spots in dysentery. Infection?

I'm 26 years old. Yesterday, I had stomach problem. I gone 3 to 4 times for poop which is dysentery mixed poop. And 1 time I had watery loose motion with so much smell. I had fever also about 99 in thermometer yesterday. Doctor gave me some antibiotics and peracetamol 325mg. Today morning I woke up with little bit pain in my lower stomach and when I gone for motion, it was also dysentery mixed type, loose but not that much and I saw some blood spots or what I call particles, very little spots not that much. Fever is gone. After that, when I gone again then my motion was free from dysentery and blood spots. but that was also not like regular poop. that was not so hard or loose but no shape poop. is this due to ameba infection?