I am 28 year old female.I had sex with my husband a week before my period date. At the end my hubby found blood spots on his condom ( I am not on any contraceptive, the only precaution we use is condoms). I did not feel any pain and hence I presumed that my periods must have advanced, however to my surprise I found that my periods had not started. I waited for two days but nothing happened. I didn't see any blood again ( though we haven't had sex again). I still have a day or two before my actual period date, but I am kind of worried. This has never happened before to me. Should I wait for my periods or consult a doctor immediately?