advice!!

So still haven't had a good poop and when I try really hard Nilah pushes down(which I don't think is a good thing) now I have heart burn that is so bad I want to puke. Also i might of got 4 hours of sleep.. idk how to get myself better, feel like if I could get a good poop I would feel ALOT better. I've tryed many things, and I don't want to push to much and I have my baby in the toilet(have to get c section Bc oldest were c section)Also my doctor is making me take all these antibiotics so I think it might be the cause of all this.