Implantation Bleeding

I spotted for about an hour (pinkish then brown) on the 23rd day of my cycle (5/21) We had sex on the 11th which was a day before ovulation. My question is: Should I test? My period is due tomorrow. I'm having no pregnancy symptoms other than breasts feeling full and a little fatigued which could also be PMS symptoms.  I hate this and I'm feeling emotional. TTC 4 years after one round of Depo. Maybe I can't have anymore. We already have 4. Maybe we are being selfish. Idk just needed to vent!