Implantation Bleeding????????

Well my 2ww is almost done.  Only 2 more days.  I have to tell you that it has been hard not to let all of the symptoms that I have go to my brain.  Im trying to stay hopeful, but realistic.  So here is what has been going on.  Last week during the first week of waiting I had some cramps like af and some headaches.  By Friday night they were pretty much gone and that was nice because I thought it was all over.  On Saturday, dh and I went to target and then to eat with my parents.  As we were leaving target, I had this strange but powerful cramp in my stomach. Not really like an af cramp, but something.  I commented to dh that it felt funny but then I didn’t think anything of it.  When we went to dinner that night I went to the bathroom and when I wiped there was a light tinting of pink and then some red.  But that was it, nothing else since then.  So what the heck was that?  Of course I want it to be implantation bleeding but I don’t want to get my hopes up.  Other than this Im having lots of gas, my boobs are horribly sore, I feel very light headed at times and my stomach is acting funny.  I want these to be good signs but I know that they could be from the PIO shots or just anything.  I took a test on Sun. and Mon. and both were neg.  Probably too soon.  And now I am not testing any more until I have my beta.  Oh I hate this soooooooooo much.  I can’t wait for Friday!!!!!!!!!!!!!