 [ Symptoms ] does second hand smoke cause high blood pressure  hi i am 41 years old and my boyfriend smokes i am wondering if his second hand smoke is one of the reasons i now have high blood pressure i have lived with him for a year now and this is the first time i have ever had to be put on medicine for this can some one please give me some information  thank you [ Disease ] hiv is very low transmission through oral sex   there have been several studies following partners where one person was positive and the other was negative if they only engaged in oral sex the risk to the hiv negative person was extremely low if not close to zero so be assured that you are ok but since you are sexually active make sure you get follow up hiv tests at least yearly or more frequently if you are having vaginal or anal sex  hiv is not the only std in town and is much more difficult to catch than the other ones so get checked for gonorrhea herpes syphilis and chlamydia while you are doing your yearly exam