 [ Symptoms ] could i be pregnant so my last period was on july 21 then according to my charting my period was due about august 17 on august 14 i began spotting on 15th and 16th bleeding then nothing my normal cycle lasts about 4 5 days and normal 26 28 days took urine test on august 19th was negative please help been trying to conceive since february 2014 [ Disease ] in the past there was little evidence one way or the other on how well condoms lowered the risk for specific stds anti condom forces used that fact to argue that condoms do not protect but now findings show that condom use can lower the risk of infection    not only of hivaids but of many other stds a 2006 study by university of washington researchers found that women whose partners consistently used condoms were half as likely to be infected with human papillomavirus for hivaids consistent and careful condom use can lower the risk of infection by a whopping 90 when researchers from the national center for chronic disease prevention reviewed results from 45 studies looking at gonorrhea and chlamydia infection they found solid evidence that condoms reduce the risk of these two stds as well the bottom line condoms do not offer 100 protection but they can certainly lower your risk    and the risk of your partner