Nightmares?

I remember one of the worst thing in pregnancy was the nightmares for me, I’m 5/6 dpo and last night had nightmare after nightmare. Very vivid ones, somebody was stocking me and killed my family. I woke up scared, paranoid was so temped to wake up DH. Next dream was wierd green smoke was coming out roads and roads were blocked to our house and fire coming out of drainage pipes and we figured our house was destroyed. I mean they was so vivid like I remember how I stoped at 3 gas stations in first dream that was side by side same type(Casey’s) looking for hot chicken tenders. Could someone be so sensitive to HCG that that just even a little at implantation causes symptoms? Then to make matters worse after dinner out of no where my son was yelling “mommy is pregnant” and he has no clue. I have always told him “the baby factory is closed no more babies for mommy.” No one has a clue of out TTC.