Too soon to test? Help....

So ive been ttc since june obviously with no luck. Af is due 4/8. Every month only one breast gets sore... i have cysts which only come about during pms week. So i have that pain.... however this month is different i have that pain and noticed that today my other breast is sore which is not normal for me at all. Im extremely tired and have a headache with mild back pack. Is it too soon to test? Am i getting my hopes up?