Implantation feeling?!?

can someone please tell me what implantation feels like! I think I maybe going through that currently from what I've read but I'm not too sure, I need more opinions! today I've had random cramps, nausea but no vomiting, smelling stuff well and feeling sick from the smell of meat, headache, backache and dizziness! I may just be sick? I'm not too sure, help!