Don't get yourself in a tizzy dear Pooh. Take one day at a time, don't pressure yourself. Sorry to hear you are tired and hurting. Pooh you are allowed a day off from the house.
You sound like you feel pressured.
Maybe go to town for DH and the bits for the sampler. Then come home put your feet up with a cuppa and do a bit on the sampler.
Then tomorrow go to the other town early anyway, get your tablets and see DFIL and come home earlyish to give you a little more time on the sampler.
Then that gives you all day saturday to finish the sampler and you will have already wished DFIL happy birthday.
Don't get stressed about what to wear on Sunday Pooh. I'm sure you'll look lovely......... You'll have a grand time I'm sure..........and the baby won't mind what you wear!!!!! Think back to other occassions.........can you remember what everyone wore? I can't I just remember they were there and what they said.