Good morning, I have a question. I take Vines tablets. The thing is that I do not know if in the first week one of the tablets was absorbed (I had a fairly loose disposable stool 1.5 hours after taking the tablet). Potential fertilization could have occurred at the latest 28 days ago, it was intermittent intercourse. I did 3 pregnancy tests before (one in 1 day placebo tablets, 2 others when taking active tablets from the next package) and came out negative, today from the morning urine also - today the sensitivity of 25 mlU / ml. Withdrawal bleeding occurred only on the 4th day of taking placebo tablets (the last), with from the 3rd day I had at times gentle bleeding, sometimes not at all, only in the evening of the 4th day appeared more abundant. Could it have been due to stress or poorly chosen contraception? I will add that this bleeding appeared after alcohol during the party (did the stress let go?) I take the pills for 3 years, can they stop serving after such a time, or can there be too few hormones? In addition, the left lower back hurts me very gently and the lower part of the right breast a little harder. Should I repeat the tests? I attach a photo of the last test. Please help and a quick reply, thank you in advance.