My husband got a Vasectomy in October. We do not use protection any more. On Friday, I got what looked like a period. It was right around the time I was expecting it. Leading up to it, I was crabby and in pain, waiting for it to come. When I got it, it was not my usual type of period. Not as much blood, and it only lasted for one day! Mine usually lasts 3-5 days. It hasn't come back, 2 days later. I decided to try a pregnancy test just in case, but the line is so faint I can barely see it. So faint that I didn't even see it at first, it just looked negative. But then my lower back started hurting, so I checked the test again, and now I think I might see a very faint line.. I am wondering if it is possible to be pregnant even with these circumstances? And before you judge me, no I did not sleep with someone else. I have been faithfully married to my husband for over five years.