EMERGENCY! I'm 6 weeks pregnant and everytime I strain wen I pee or hve a bowel movement I bleed from my rectrum why is this?

Not normal. You need to see your obgyn. They need to confirm that the bleeding is from your rectum and not from the vagina and confirm that the pregnancy is ok. Common causes of rectal bleeding in a young patient like you are hemorrhoids and anal fissures. An exam can confirm.