Late period!

I am 9 days late. Having period like cramps. No blood at all. Took pregnancy test at 4 days late - negative
Pain on my left side
Feeling nauseous and faint
Extremely moody
Has anyone else had this? I am fearing eptopic pregnancy!!
I have a four year old perfect pregnancy no problems
Took three years for new pregnancy and lost to unexplained miscarriage at 12 weeks and now this!
Pain in left side is increasing day to day... No signs of period other then cramping.