5 weeks UTI & bleeding

Friday night I went to ER for light watery pink spotting when I wipe. Was told I had UTI and am now antibiotics for the next 5 days.

Around 11:00pm I had a slight cramping and was constipated with diarrhea. After the bathroom I wiped and notice this on the tissue. The spotting went from a watery light pink to a more red with some small mucus and what seems like tissue.

Anyone experienced this before and went on to have a normal healthy pregnancy?

Can UTI cause bleeding to be bad like this? I’ve been having spotting since Friday night and also had a transvaginal US Saturday night at the ER. HCG levels were good for 5 weeks and tomorrow will be hearing back if it doubled or not.