Cramping after sex first trimester

Hey I’m 4w 6d today .. well last night I DTD and I was on top (tmi) .. since falling pregnant sex does not feel the same idk if it’s nerves or what but it feels tighter and hurts ..

Any way we were in the middle and I was going to try to achieve an orgasm but I started cramping to the point where I had to stop .. I couldn’t walk straight up.. this is my second child I don’t remember cramping after sex until later in my pregnancy..

Is this normal in first trimester

The cramps were nothing like my period cramps they hurt worse went in to my buttocks.

Will I be able to enjoy sex pregnant? Am I in danger if I have sex?