EMDR making sleeping/nightmares worse?

Been doing EMDR for only about a month now, but in the past few weeks I’ve noticed so many more sleep disturbances, nightmares, and a couple night terrors, which I previously only had maybe a few times a year. Is this normal? Will it go away? I want to heal and get better as quickly as possible but being sleepy all day and scared to go to bed is getting kinda hard :( Any advice?