help!!!!!!

Katie

Ok so came on to my period on Friday. I did pregnancy tests days before and it was all negative. I did one on day of period again negative. today I did a test as I have been sleeping non stop. and there is a faint positive line on 3 tests all different times of day. I have had no cramping with period and no heavy bleed at all. Not even managed to fill a pad up. shall I see what happens over next few days? has anyone had this happen before??