19 weeks with UTI

hi momies..im 19 weeks pregnant, yesterday hindi nawawala sakit ng chan ko plus sakit s balakang and feeling na lalagnatin. Since parang continuous ang sakit, nagalala ako for baby so i decided to go to the hospital and since madaling araw pa sa ER na lng. They found out that I have UTI and prescribed an antibiotic. I was really hesitant to take an antibiotic baka kasi maka affect kay baby but the doctor said na safe nmn daw un. But still hndi muna ako bumili, i will go to my original OB first to ask if ok lng or if may other ways to cure UTI without taking any meds. Sno po ba dito nakaexperience ng same, what natural remedies did u do to cure UTI? Thanks!