8dpo !!

I’m 8dpo and I’m feeling different I have had cramping lower abdomen.. not to painful but enough to kno it was there .. I had a sharp pain in my right boob earlier but it went away.. I’m kinda consippated .. some nausea. Headaches here and there I think I spotted a little bit 2 days ago but it was very very very light.. any ideas ?? When should I test ! What test do you recommend?