IMO and IME, rasberry tea is beneficial through out the childbearing year. We made huge pitchers of it when I was pregnant w/ds and dd, dh and I all drank it. It is also great for diarrhea, etc. I give it to dd when she's sick. I don't see why you should consult a dr. It is probably just a CYA thing. Dr's in general don't know that much about things like herbs and are very skeptical. It has been used for a long time.
IME, I had to make myself drink it every day in early pregnancy (Not that it tasted bad, just didn't really want it) and then later on, COULD NOT get enough of it. I felt like it went straight into my cells! I feel very strongly that it was highly beneficial to me and babe. Interestingly, right after birth, the craving was gone!
Also FWIW, I wouldn't put it in a coffee maker as the tea wouldn't get to steep long enough. The water goes through the fliter fairly quickly. The tea needs to stay in contact w/the water longer, IMO. And also I believe that letting it float around &b straining is better than a tea ball....though I used both methods. Also make sure it is covered while steeping.
Heat may damage the tea making it *less* effective, but won't ruin it or anything, Apple. You want to store tea away from light, heat and moisture just like spices or coffee. I kept the bulk of mine in the freezer. And yes, ITA, compleat mother tea rocks!! I tried numerous other brands, but CM blew them all away!! Much better and much more "alive!" good luck.