Body intuition

Pixi
I have always been very in tune with my body, and I was wondering if there are any women, who felt implantation, and what it felt like?? The reason I ask, is I have always had very irregular periods, and the last two ones I have had weren't like my normal ones, and after my last ended(a few days ago), I am still having pain in my back and weird cramping, that more feels like pressure than really pain.. so I'm just curious if anyone else has felt this way and what it could be, or could it be implanting? I did want to add that my first pregnancy I camped like this, and had a few weird "periods" while pregnant, but unfortunately lost the baby..