Weird symptoms

Brittany
I am currently 8dpo with 5 days away from when AF is supposed to come. Iva had major lower back pain, cramping and bloating in my lower abdomen for a week and a half now which is not normal for me when I get AF . I usually cramp the day before and the day of her showing her face. Today my gums started bleeding randomly and for the past week I've been having extremely vivid strange dreams. I took a test and it came out negative. Are these pregnancy symptoms? Was it too soon for me to test considering I'm 5 days away from AF and I have a regular cycle ?