26week 5days pregnancy. This uti?

Im getting pain in after passing urine... i think its uti... alrdy i got uti and completed antibiotic course again im feeling the same i gave urine sample for urine culture and sensitivity report yet to come...but please anyone suggest me what all the precautionary level i have to to take to escape from uti... every time i go toilet i pour dettol on toilet and flush it and on toilet seat i pour water with drops of dettol then j use... and to pass urine i use stand and pee funnels i wash my clothes and panties with dettol along with detergent didn't shave my pubic hair after i conceived... didn't had sex after 5th month before that had protected sex...daily having 3-3 n half liter warm water im going mad and worried that how and im getting this uti? What is the main cause for this uti so that i can take precautionary please help me out with this