Not sure if I am over reacting or if how I feel is legit?

Been with my partner for 2.5 years but anytime his mum comes to visit she stays for 4 months.
I think it's good that she comes to visit, but I do find it effects the relationship we have.
He is 41 and I am 30.
When she visits I can't stay over as it is deemed not appropriate. There is no sex before marriage in his religion. We have different religions.
He will not agree to stay at mine despite how many times he says he will, he never does. So it feels like there is no way around that.
My issue is, that the relationship feels immature with these problems. Not being able to kiss him infront of her. Not having physical intimacy. Him not even dating me when she visits frankly- we never go on dates together or have quality time. It's literally like we are banned from seeing one another whilst she's here. He of which will be totally on board with and does not do anything differently, despite me raising concerns and asking for compromise I. e. him staying over at mine to visit so we have our space.

I like sex and I like feeling like I am considered. And by no means am I when she comes. Even when we go out, every single time, she will come with us, including valentines day last year. Which felt weird for me. Again, I've no problem with him wanting to include her of course where appropriat, but I would like some separate space as I think that is healthy for two adults.

I am at my wits end feeling like we can't progress and I feel like her visiting again is just getting in the way of him having his own life. Which he doesn't seem to challenge.
His sister is also demanding and expects him to travel to Dubai and back to go and collect her to bring her to the UK. Simply to choaver her.

It seems so ridiculous whenever I hear these things. Espeshially given he can't even plan simple date nights for us or do anything nice for me.
Not sure if I am over reacting or if how I feel is legit?
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