The only real way to know is if you are is to take a test. I had implantation bleeding with this baby at 7 dpo, but didn't have any cramping or anything. I finally found at 13 dpo, and didn't even start to feel pregnant until 6 weeks, but everyone is different. It's just been that way for every pregnancy with me... I would say take a test, and if it's neg, wait a couple days and test again.
i dont know but i do kinda have some of what ur having when i thot i was pregnant but then it was to early to test i didnt want to think i was pregnant my breast feel sore a lil but not when i touch it n when me n my hubby do it it hurt it so bad after we did it i felt this hard thing below my belly when i touch it it move so a few week later i find out i was pregnant i dont think this help much but just to let you know what i had