Need some advice

I'm 37 weeks and in a week I'm getting a membrane sweep and I know sometimes it works and sometimes it doesn't but just incase it does I want to be physically prepared for labour and birth. This is my second baby and I have a almost two year old who is such a easy child but I'm constantly cleaning up and picking up toys and she's going through a stage where she won't sleep till late and won't nap during the day. My partner works from early to late so its all on me at the moment.. I been waking up spewing because my heartburn is ridiculous and nothing has settled it for me.. I don't know how I'm going to go when I go into labour because I'm physically drained already. Any advice??