To test or not to test...

So i went to work yesterday everything was fine. Hubby and i were getting ready to lay down for bed i was feeling a little woozy. I thought maybe i didnt drink enough water. I brushed my teeth and as i was headed to my bedroom i passed out. My dog broke my fall...i still geel bad about that he probably thinks i was attacking him lol. But i feel a little better today. Im still a little woozy when i stand for long periods of time. Speaking of periods i have not started yet. Thats not really unusual for me as my cycle is all over the place. My breasts have been sore but im thinking maybe its just pms symptoms??? My husband and i have been trying to conceive but nonsulantly. If it happens it happens. Should i take a test? Or not waist it...they do get pretty expensive when you buy them on the regular... I would appriciate any advice!!!! Thanks in advance!