9DPO, Pink Spotting???

Ok, i just went to the bathrom and when i wiped ther was pink, like watered down blood (sorry if TMI). I have been TTC and had with my Husband the day before my OV day on 4-18-08. Is this a good sign?? Took Test this morning with BFN of course its a little too early. My levels were really low with my 1st son and took blood test for a positive. Some mild cramping, BBs look different, VERY sleepy. I have never had this "spotting" before. Please, what do you think?? I will retest and all that on the day AF is supposed to visit, on May 4th. HERE's HOPING for Baby No2!!!! :-)