I may be in the minority here, but I would say no. I applied and ordered all my study materials and then found out I was pregnant about a month after. So, since I had my NTS, I pushed through. I took FAR, BEC and AUD all while pregnant. I took AUD while I was 36 weeks pregnant. I DO NOT RECOMMEND THAT TO ANYONE. I did HORRIBLE. I think I might've finished AUD in an hour because it was SO HOT at Prometric that day. Needless to say, I failed with flying colors. I couldn't sit still to study to save my life. And the first trimester was the WORST because I was SO TIRED all the time. But it really just depends on your will power and personality.
I waited until my daughter was 18 months and really dove back in. I took FAR in February of this year, then REG in May, then BEC in July and passed all three. I took AUD at the end of August and made a 70. But that was probably because I was working tons of OT and I live in Louisiana and literally took AUD the week after it flooded down here. I'm reschedule to retake AUD on Tuesday.
Basically, it all depends on you and whether or not you think you can muscle through. But personally, I would never try to study while I was pregnant. It was not a good time.
FAR - 51, 76!!!!!!!
BEC - 65, 78!!!!!!
AUD - 53 (Retake 8/26/16)
REG - 67, 76!!!!!!!
"If you can dream it, you can do it."
-Walter Elias Disney