TTC After Implanon

[HappyWife19]

Hello guys! So I got married young, and was on implanon since April of 2012, always had irregular periods, and implanon was awful...so I got it removed on June 20th, and was waiting for the "withdrawal bleeding" or whatever. I had my period for 3 weeks and had it during removal, and haven't gotten it since. I started with a light spotting this morning, but it turned into heavier dark bleeding and I was hoping to be pregnant...any thoughts? I've taken several tests about a week ago (I know, too early...couldn't resist) and they were negative. Could it be implantation bleeding? I've had other symptoms too- slightly sore breasts, cramping, extreme fatigue, back ache, food cravings...do I just have my hopes really high? we are TTC, so any information will be great!