Implantation or nah?!

Jami

On day 23 of my cycle and has been a week since I last had relations. We’ve been trying for a year but i only have 1 ovary. My periods are like clockwork. 28-30 days apart. It’s been 1 week past ovulation and today I’m having light pink spotting and stringy pinkish CM when I wipe. Negative tests! If it is implantation how soon will I get a BFP? Testing with cheap tests!