When should I test?

Aireana
Hey, everyone! This month is our first month of TTC and we are over the moon excited! I charted my ovulation being somewhere between April 8-10th (the 8th and 9th shoes a high fertility). I know it is probably way too soon to even tell, but the last few days I have been very moody, sore breasts, constant nausea, and now today I had sharp pains in my cervix. I'm still two weeks out from my next AF so I don't think that is it. Is this possibly implantation cramping? If so, how soon can I Test without it being too soon?
My hubby wants to test soon, but I don't want to get my hopes up for a false negative.
Help!