Question: should I take a Test?

I have PCOS.. I'm 37. Trying to conceive. MMC says my fertile days where Jan. 21-25th.. and most likely conception/implantation was Feb.2ed. I'm Having a lost of Symptoms. very Big hormonal changes. sobbing one minuet and laughing or wanting to kill the next. larger very tender breast. weight gain. flutters and cramping.. BUT.. I have a light period right now..??? I'm confused. and my period was early was due the 9th.
Please help