TWW Question

Just wondering if Red Raspberry Leaf tea is ok during the two week wait? I'm only 3 dpo but I don't want to risk anything (we've been trying a YEAR). I know it strengthens the uterus and helps thicken the lining but I have also heard it causes uterine contractions (to help induce labor). I want to do anything and everything I can to improve my chances of conceiving.