YANBU
With DS1, ex mother in law was stood by my hospital bed while I was having a post section blood transfusion, waiting for DS to be brought back up from intensive care, telling me 'what a shame it was that I had been cut' trying to force homeopathic remedies on me and generally being a passive aggressive twat. DS was 12 hrs old and I'd only just come round from the general anaesthetic. I hadn't really had the chance of a cuddle with him.
With DD, my new improved MIL appeared the same day. I know the inlaws had been hanging around the hospital but where DD was born at 3am and I was disacharged at 7am they went home without a look in at that time in the morning. I was feeling fine and didn't mind close family but she brought DPs auntie with her who I had never met before. She was lovely but I was sat on the sofa making polite small talk when I realised I had a massive streak of post birth blood all up my arm. I also must have looked a bit like satan as I burst all the blood vessels in my eyes.
With Ds2 and another c section, we drove home via MILs so we could get it over and done with. Then we got home, my mum was there and so was my sister. Me and dsis get on ok but we aren't close. They decided to order a Chinese, so we had flapping about where the menu was, who delivered, who had cash, where was the cutlery, where were the plates etc. Then they all sat eating and watched me struggle with newborn DS and a csection wound trying to get out the sofa to the table. Final straw came when DD aged 2, decided to slink off to to the loo. She couldn't get downstairs, I went to get her but DD jumped at me from where she stopped halfway down. I caught her, but where I was feeling pretty faint from the section 24hrs before I fell. Nobody even put their fork down to help me up or see what the matter was. I had a bit of a hissy fit at that point.
So OP, you are not being unreasonable. I'd just see how you feel and not agree to anything at this stage. As far as I'm concerned a new mum must have her wishes respected and every need attended to!