5-6 weeks pregnant and bleeding

Okay so I started light bleeding on Tuesday night. Today is Saturday morning. It’s gotten heavier but NO clots. Not staining my pad. Diagnosed me with a UTI and started me in Nitrofuratonin. Since I started bleeding. They took my blood levels on Wednesday and Yesterday (Friday). They’re not giving me results till Monday due to clinic being closed on weekends. I start getting lighter and then I take the meds and then my bleeding gets heavier. Can I have had a miscarriage and no clots? Or what do you guys think? I’m wanting to prepare for the results of a miscarriage. I’m so sad, it really hurts..