How do i tell him to stop ?!

Ol so during pregnancy I loved anal. Now not so much .but everytime we have sex now he trys to stick a finger or a thumb or a toy in their and I just cringe .I've tried to tell him before it feels different after baby. But he says I just need to relax and re loosen up my butt.

Also he's bad at stimulating my clit and I'm forced to either use my toy or do it myself.and I have to o threw clitoral stimulation before I can o three just sex

.... When he tried it just doesn't feel good. (Maybe also BC he's a mechanic so his hands are rough?) Our sex life has already taken a dive BC of the baby

I just don't wanna ruin what little sex we already have...