Keep falling asleep - help needed!

[Mousebank]

So this last week or so I've been feeling exhausted in the afternoons so much so that I've been falling asleep in cafes and park benches and getting to bedtime and just wanting to crawl into my bed. This is a)ruining our sex life and b) a major disruption to looking after my 11 month old.
He's slept through a good 12/13 hours since 5 weeks so it's not that, I eat fine. My pill (rigevidon) is being taken every day as usual but I had my last period
About a week ago and I am now bleeding again?
Confused much , and just need waking up a bit!

[turtlesallthewaydown]

Didn't want to read and run but I'm not a doctor. Does sound odd and if it was me I'd be off to the GP soon as I could. Hope you feel better soon.