6 months+ pregnant and husband is planning his stag

Em

I'm generally a very tolerant and chilled partner. Since our dating days, I never complain when my partner goes out for drinks with the boys and comes home late. I understand that he needs bonding sessions with the boys and I don't want to end up being like those girls who nag and control their men too much.

I'm now 6.5 months pregnant. My partner treats me well but I feel rather disappointed that he's planning his stag this weekend (even though we registered our marriage in January this year).

It's bad enough that we haven't had much sex since I've gotten pregnant, I feel upset that he's going off for a weekend in the company of gorgeous slim girls while I'm left behind to deal with being pregnant and feeling unattractive. And we have been legally married for half a year so I don't understand the purpose of him holding a stag. He says he's doing it for the boys but somehow I wonder.

I don't know how to deal with this since I've never created a fuss about his outings all these years. I've been tearing a lot about this and he is confused and clueless as i haven't told him the reason why. Would it be unreasonable for me to let him know that I feel uncomfortable about this stag cos I'm pregnant and feel a lot less desirable?

If you think stags are fine and I'm overreacting please let me know. Thank you!