Hey all! I had my last period on june 9th, and it was regular. However, this month, I started bleeding lightly on july 6th (3 days late), and only for four days. I had mild cramps about a week before I started bleeding (normally my cramps are heavy, and about a day or so before I start my period). In the past week or so, I have had headaches, nausea in the morning and early afternoon, moodiness, breast swelling and tenderness, frequent urination, fatigue, and a light, stringy discharge. Is it possible that the bleeding was implantation bleeding? I took a pregnancy test today, but it was negative. However, i'm not convinced. In the past hour or two, I have been feeling mild twinges in my lower abdomen. I just feel pregnant, if that makes sense to anyone. The pregnancy test I took was only 3 dollars and it was an off brand. Does that have anything to do with the quality? Also, i'm taking anti-biotics (cephalexin) for strep throat. Could that cause the test to be a false negative? Any answers or help would be greatly appreciated!