Just a quick Monday morning question

Taelah
Good morning lovely ladies! 
I wasn't entirely sure what to do in my situation. 
I have PCOS and my cycle changes after every period. 
Basically it can be anywhere between every 4 weeks but has also been 6-8 weeks. 
This is my 7th week making it week 3 missed period and my breast are also meow tender than usual and I'm bloated.
I had a friends birthday yesterday and has a small piece of cake and threw up which I've not done in years. I'm not sleeping more than 1.5 hours. 
Basically when would you think I might be able to test ...? 
Thankyou 💕✨