hello idk what is going on but i am two days late on my period. my period is supposed to start on…

hello idk what is going on but i am two days late on my period. my period is supposed to start on the 20th but never showed and i have a normal 30 day cycle? my fertility window was the 1st through the 7th of this month and my ovulation date was the 6th i had unprotected sex on the 3rd, 7th and 9th and on the 9th i experienced like a line of blood 20 minuets after having sex there was no infection no tears or pain and the next day it was like soaked up pink discharge like when u soak a paper towl in pink koolaid looks like this in the picture . is this implantation bleeding? no pg test yet so just need some input. feel bloated and my tits are dark in color and tender theres no stress or anything