My period

Che • Im 20 years old & married i have 1 son And we are TTC for baby number 3. Our 2nd son was a stillborn at 17 weeks. On 12/12/14
So my period is 4 days late. I took a PT 3 days before my period was due. So idk if i should take my PT now.? Im really anxious to find out if i am :) but i dont want to get my hopes up