Uti symptoms/neg preg tests/uti test thoughts

I have been have some cramping but mainly just lower back pain. I actually went to the doctor 4 days ago thinking i had the flu with sore throat. Negative for strep and flu. Felt fine 24 hours later. Now having really bad uti symptoms? Is this uti test negative?

I’m getting negative pregnancy tests too and I’m either 12 or 13 dpo and af will be here tomorrow or next day. Any thoughts?