Thoughts???

Heres my chart. it appears i ovulated on CD16 (possitive opk on cd14 pm, cd 15 am/pm & cd 16 am) it appears i had an implantation dip at 6DPO. I have had nausea and hightended since of smell since like 4 Dpo @5dpo I had mild period cramping that continued w other symptoms until 7 or 8 dpo. (I know too early to have symptoms but this is what happen) then those things stopped and my breasts got very heavy and sore. They are currently heavy and sore. and yesterday and today (9/10dpo) I have been getting random sharp pains above my pelvic bone. it shoots to my vagina. it's not terrible pain but it's uncomfortable. no reg at symptoms.

I have tested every other day since the dip but I'm getting neg tests. Am I out. I see so many BFP charts where people are getting them the day after the dip..or 2 days after...im now 4 days after and still nothing. I have used first responce, Wal-Mart 88 cent test and a clear blue digital.

trying not to give up hope but I'm discouraged seeing neg tests. af due Monday, bbt temp taking everyday at same time. we used opks and pre-seed this month so hoping it's our month!