Should i test?

Hi everybody...

So i was diagnosed with PCOS (Polycystic Ovarie Syndrom) i don't really know much about it only what i've been told by my doctor. I got pregnant once before but when i tested they came back faint or just plain negative. Unfortunately i miscarried from what my doctor told me my hormones were too low to carry. Lately i've been feeling nauseas in the morning, im having a very hard time sleeping at night, im eating like crazy and i have the most odd cravings at random. My breast are very tender and i am very tired. The only reason i am hesitant to take a test is because i dont want to get my hopes up and its really money i dont have right now just to be told im not pregnant and because according to my doctor pcos can also cause signs similar to pregnancy. Should i test?