I'm sexually active i've been experiencing vaginal bleeding after pooping for the past two days i received my period 2 weeks are less ago. the last time i was sexual active were 7, 9 and 12 of this month unprotected. what's causing this?

I assume the vaginal bleeding is just spotting because you noted the bleeding after bowel movement. By the timing, the spotting can be due to ovulation but 100% not due to implantation even if you were conceived on the 7th. If you have any other symptoms besides spotting such as unusual discharge with foul odor, pain or itching, etc. then you should see a GYN doc; otherwise, observe for now.