Implantation Bleeding?

Hey, we are currently trying for our second baby!

My cycle has been all over the place since having I stopped my depo-injection, last one was April. My cycle is currently 15-18 days so it’s hard to track my period/ovulation.

We thought that I might be pregnant as I’ve had really tender breasts, that have also grown. My sense of smell seems to be heightened, tired and I’ve had a metallic taste in my mouth.

Have had on and off spotting/bleeding like this since yesterday lunchtime, usually my period is really heavy and painful. No pain this time but I am bloated.

Has anyone had this? I don’t remember any bleeding with my son but I usually bleed heavy with blood clots.