Who all has felt Implantation? I need help!

Yesterday was my 8dpo and 5 days away from my period. I was feeling pinching, pulling, and slight burning sensation in the lower left of my abdomen. It was happening off an on. I was also feeling lower back pain and a head ache. Today I had a head ache all day with no cramping until now I'm feeling slight cramping. When I woke up this morning I felt like I AF had came and checked and there was nothing. We have been trying for a few years and I pray this is it.. I really need someone who can relate. Please all answers wanted and needed.