Really tired again- normal??

[Em1503]

Hi, I'm now 18 weeks and for the last couple of weeks have been feeling normal again, no sickness etc. for the last few days I've been so tired again, like I was in the earlier weeks. I've had to have a nap at some point in the day for a few hours and been sleeping loads at night time! Iron levels were fine when tested. Is this normal and has anyone else had spells of tiredness at this stage?

[JC74]

Yes I'm 17 weeks and the sickness/nausea has gone but the tiredness has come back. Not as bad as it was but I suspect it's due to being less comfortable at night and having poorer quality sleep.
I've also been on leave from work this week and have missed the routine - I've been very lazy/lethargic!