11dpIUI, 10dpo and I'm Getting Nervous

Why am I so nervous?  Take a look at my March 2011 Chart, the one at the top of the page.  See that lovely temp drop on 8dpo and the temp jump this morning, at 10dpo?  That looks suspiciously like an implantation dip to me, including the requisite temp drop below the cover line.  I've also had the corresponding intermittent uterine cramping through the day.  And today?  My nipples started tingling/itching like they did last month during my m/c cycle.  I even put lotion on them this morning to make sure they didn't itch from being dry.

I know I'm not going to make it through tomorrow morning without testing.  If that is a real implantation dip a HPT should show something tomorrow, 3 days later.  I'm really, really nervous.  If I don't test I can live with the fantasy of being pregnant even if I'm not.  If I test and I get a BFN it isn't over yet but it won't be looking good with a chart like that.  And if I test and get a BFP?  That would be the best result of all.