Raspberry leaf .confused .. Is it safe?!

Jess
Im 6 weeks and 2 days along in my 2nd pregnacy . I was told with my first pregnacy that teas with raspberry leaf were unsafe due to raspberry leaf causes contractions .. Well now into my 2nd pregnacy and sick as can be ? all the "pregnacy teas" seem to have raspberry leaf . I of course ask my doc and I get "oh yeah that should be fine" (which isn't to reassuring) doing some reading and several sources say it has GREAT health benefits for pregnacy BUT should be used only in 2nd& 3 rd trimester (which doesn't make me feel to good) and others say NO due to helping with uterine contractions ?! Sooo beyond confused.. If something says it's only safe to have once in awhile then how good can it really be for you ?! Just looking for some suggestions on a great decaf tea for some relief with this horrible around the clock "morning sickness" 
​    Thank you in advance for any advice or thoughts !