First time TTC query on testing!

Claire
Hi everyone, I'm hoping you can help! 
Me and my husband are TTC, came off the pill in January and started really trying in April! Had a short 2 day period on 21st May (normally 4 days) and AF should have came Fri/Sat (I've been tracking and for some reason have around 34 day cycles). She hasn't arrived! Do I test?! I tested last Sunday 19th (out of pure impatienance) and it was negative to I am reluctant to test again and be disappointed. 
If I symptom search I've had headaches, nausea but decreased appetite, backache no real period pain but some strange pains. But I don't want to look too hard! 
What do you think? Shall I wait for a while? What if it's negative again?! 
Thanks everyone xx