I have bin tested for stis and std and all cum bk negative.. i have bing havin unprotwcted sex with my bf since nov 2006 trying for a baby we both smoke about 20 fags per day is this naything to do with why am not gettin pregnat? am 19 and my bf is 35? cud it b his age?? am sick of bin disapoointed each muth... i just want to b a mother more than anything doctors wont do anything till nov 2007!! its just sooo anoyin~ and upsetting each muth wen my period cums.. any advice????? please!