Am i??

So we've been ttc for a few months now we have a 12 year old but that of was a complete surprise didn't even kno we we're expecting till I was well into my second trimester. My fertile days we're March 22-28 we did the " baby dance" on the 23-26th my period was due the 4th still no sign. I'm emotional as can be can't seem to keep anything down I'm sleepy and my head hurts horribly and tmi but the other nite while fooling around I started lactating. I'm scared to test cause I don't want to be let down