I had thick dark blood in my stool on 5/28 & 5/29 and And also in my urine on 6/2 & 6/3. Is that just a urinary tract infection?

Not normal. Thick dark blood on the stool can be a sign of more serious problem, and is not caused by a urinary infection. If this isn't blood from the vagina, an evaluation for cause of blood on the stool is needed. Most common cause is hemorrhoids, but there are other more serious possibilities. .