TTC after depo injection

emw

Me and my partner have been trying for a baby for little under a year, I was on the depo for about a year and half before.

I’ve been taking pregnancy tests very month because my periods have been very irregular. I didn’t have any for months and then the last few have been every other week. Now I haven’t had one for three weeks. And I’m having cramps and sore breasts. But also very light spotting. Could this be implantation bleeding ? Or is it wishful thinking !

I used a <a href="https://play.google.com/store/apps/details?id=com.glow.android.nurture">due date calculator</a> and it said I would be 4-5 weeks is it too early to test?