Ideally you just need to rest and take it easy for 24-48 hrs after transfer and make sure you are drinking at least 2 litres of water - very important! Also dont completely hed rest, sofa is fine but make sure you get up and about every 2 hrs to keep your blood flowing (esp to the uterus). A low sugar/low GI diet is good too. Stops your levels increasing/dropping too quickly which could make your uterus a little jumpy and we dont want anything to disturb a little embryo trying to implant :)
Keep this up during your tww. You can def get on with things just take it easy...so lay off heavy housework (yay lol) no stretching or reaching up especially and no hot baths. Some people dont worry about the hot baths however your uterus needs to be a certain temp for implantation and too hot a bath will naturally increase your body temp.
Seems like a long list but very easy to do and saves you worrying if you should/'nt have done anything differently. Stress and worrying, albeit near impossible to avoid during this horrible wait, wont help either. Try think lots of positive thoughts and take each day at a time!
Wishing you lots of luck ;-)