post c section question/concern...

Okay so this maybe a bit much but im like a few days shy of being 6 weeks post c section and my bf and i tried having sex last night and i didnt realize that down stairs had gotten EXTREMELY tight and since i coudnt have sex with him we stoped and i noticed blood on him. now i use pads and there hasnt been any bleeding for 2 whole days, so we gave it a try. my question(s) is 1) is it normal for me to be so dang tight down there? i mean we were having normal sex close to 7 months pregnant till i couldnt. 2) should i be worried that there was a gush of blood once we stoped and there hasnt been blood since either?