haven't got a clue what's going on 😳🤔😐

Charlotte • Charlotte 25, UK, married, pregnant with first baby 🤰🏼 due date 19-12-17...keeping gender a surprise 💗💙
It's been 7 weeks since my last period 
Not had any spotting or anything 
I feel sick most of the time
I've had an upset tummy on and off for the past 3 weeks at least? 
Tired and what not.
Every test I take is negative 
Because it's been so long since my last period, am I even ovulating? I know I should probably know about that kinda thing but I'm seriously clueless
Do I go to the doctor? Or just carry on as am, don't know what to do for the best.
Really open to chat about all of this so let me know your thoughts or if you've gone through the same/similar thing what you did or are going to do
Thanks so much ladies -x-