19day late period

Any advice appreciated!!!!!

I have a normal 25 day cycle. My last period was April 23rd to 28th. We had unprotected sex in between. May 20th to 21st, I had light spotting. Spotting was a few days before my expected period. Lots of symptoms including nausea, food aversions, extreme fatigue, nipple sensitivity, headaches, dizziness. June 1st first responce pregnancy test maybe (very faint line). Should I test again or wait until the 12th for next expected period?

Also, is implantation bleeding THE missed period, or is the period after implantation bleeding THE missed period?