Lena I have had thrush so many times (yuck

) and by far (for me) the most effective treatment is inserting the cream for six days. The oral tablet did nothing (you can't take during pregnancy anyways) and any less than six days of treatment and the thrush can flare up again (for me anyways).
I got thrush with my last pregnancy and it was the only time I had it without symptoms. I used the cream and used the applicator to insert but I didn't insert it all the way, about half way did the trick.
There is no way in hell I would want to be treating it post birth

My whole 'area' was a no-go zone for weeks!!!

Would not have wanted to have been inserting anything!! Also, why wait that long? If you treat now you could be done and dusted with it within the week
Consuming yoghurt or other products (eg., capsules) containing the ‘good’ bacteria, lactobacilli
can help balance out your system from the inside. Trying dropping down on sweets and sugars in general too and this may help regulate the thrush.
I am feeling a bit jealous that you've never had it before. When my period returned post birth, I was getting thrush every cycle...until I feel pregnant again!!! Nightmare!
I hope it clears up quickly for you