A sharp kick in the balls may help him reassess his immediate ejaculation goals OP.
What a revolting little creep he is. Why ARE you still with him?
Longer term, maybe you are just not sexually compatible. That might be to do with you having a lower sex drive ... how long do you feel there has been a mis-match?
Conversely, maybe his sex pest manner is what has put you off over the past however-long-it's-been that you have felt reluctance.
Do you live together? Have kids? How far invested are you in the relationship, & how easily could you remove yourself from it?
If you cannot foresee getting back on an even keelnwhere EACH of you is both satisfied & comfortable with the frequency of sex, you are way better off leaving him.
Frankly I'd have dumped him as soon as he made the remarkable ejaculation comment. Sadly, you are grieving & no doubt still reeling from his callous disregard ... but I am concerned by your thread title. Did your worry about being "allowed" agency & control over your own body begin with this specific relationship ... or did it start prior to it?
Either way, to help you process your grief, & also focus on your own autonomy & self-esteem, please consider finding a counsellor who will help you uncover the factors underlying your current relationship difficulties.
I am so sorry about your mum, & hope that the happy memories soon outweigh the inevitable loss & sorrow.