Is Frequent Sex The Cause Of UTI ?

hi doc i m 26 yrs married female n 2.5 yrs baby, i think i m suffering from urine infection what particular type i dnot know.... but i m having symptoms like frequent urination n some starnge feeling during n after urination is that urine infection? I had UTI 9 months before frm now ( cystitis ) in which i had that stange feel after urination, mild fever , awful smell n few drop of pinkish urine i think that was blood but it cure as soon as i started taking medicines, (medicated wd Tab oflin 200 n Tab p-650 for 5 days n 3 days respectively). This time i m just having stanrge feeling during n after urination n frequently urinate no white discharge or anything other symtops like before... I m currently using Clean n dry creame seen in TV Ad nowadays. I hv a question does it cause bcoz of frequent sexual process.....? Plz guide me as i recently shifted to new place where i dnot any gynic so suggest me something......