I'm wondering if I could be preg. My cycles are 34 days my lmp was march 26th I had unprotected sex April 14th. April 22nd I started spotting brown for hours, towards end of the night it picked up, filled less than 1/2 pad. Then I continues to very lightly bleed for 2 days n on the 25th it stopped. I had no cramps, no blood clots. And no normal signal of my period coming. I always drink about 2-3 gallons of water the day before I start. I didn't this time . Totally caught me off guard. Could I be preg ? And is it possible to bleed more during implantation if conceiving twins ? (Twins run in family)