Light cramping and twinges 6-7 dpo, could this be implantation?

Hi, my husband and I just started trying to have another baby. Our daughter is almost 9 months and we want our kids close together. With my daughter the only sign of pregnancy I had was this awful sharp pain in my ovary after I was already late for my period. My periods also range between 33-35 days apart. For the past few months my period has came every 35 days but when it came in May it was after 33 days, this is normal for me. According to my ovulation calender I should have ovulated a week ago. Yesterday I started having twinges and slightly sharp pains around my ovaries again and have been slightly cramping also. My question is could this be implantation cramping and twinges considering it started at 6dpo? I have read a lot online and it said it can happen between 6-12 dpo but I don't want to give my hopes up. The only other time this has happened was when I was pregnant before. Also, my legs were cramping two days ago and since Sunday I have been getting nauseous off and on, but I umed it was from working (leg cramps) and allergies with the nausea. Anything will help, even if you have ideas of what else it could be.