idk if im pregnant

so im 8 days late on my period and 3 days ago i had spotting kind of yelowish

so that same day i had sex and a day later i started to feel nausea in the morning not really bad just like if i see the food i felt really bad and today we wnt to eat i felt realy hungry but after esting some i started to feel náuseas again and couldnt eat anymore it was loke this odor bit didnt know what it was and sometimes i feel my abdomen geting hard do u guys think i have any chance of being pregnant or is it normal hope ya understand ohh sorry and i feel hungry bit the food dosent looks any good when i see it i dont protect my self since 2 years ago and havent got pregnant i have one baby and it took a year to concive him not using anything