tiredness can be because of what your body has been through and it can also be a sign something underneath is brewing. so, while i would not worry unless you are given reason, i would mention it to the doctor. when our bodies have been thru a lot, they need much more rest than normal. i would give it rest at a good time of night ... earlier maybe than what you are used to - be in bed by 8 or 9 latest and get a good night sleep = get exercise during the day and some fresh air ... and only give in to a nap if you have to, but if it feels necessary, then go for it. remember tiredness can also be a sign of depression which can sneak up on you after something like this ... so watch for that - your mind may be fighting a harder battle than what you realize yet.

my best to you my dear