I took my birth control pill July18-19 Saturday are Sunday I'm not sure, July19 me and my boyfriend had unprotected sex he said "he pulled out" but I don't know, I started my period July 21 but it was only for one day I went to the Dr Tuesday and found out I had a UTI so I looked up symptoms for that but the uti symptoms is the same as pregnancy symptoms, is it possible that I can be pregnant?