Can you get a second opinion?
If they are recurrent or this one hadn't gone away with the most recent antibiotics, I would ask to see if they can figure out WHY they are recurrent and WHY the antibiotics aren't helping. Maybe you need a different type of antibiotic.
I would be concerned about just letting the uti go as, but only can it be dangerous for baby, but could lead to further medical complications for you (I ended up with a kidney infection when I was younger because I didn't tell my parents about the pain I was experiencing with a uti - I was 11).
I don't know how it works where you live, but if you can get a second opinion, I would. As the pp suggested, drink lots of cranberry juice as well as water. They need to figure out why you keep getting them and why this lady one hadn't gone after a full treatment.