is my big redtail alright?

I have a big female redtail I bought from NERDS in october. I also bought a beauty male at the same time. These are both awsome snakes and I am very happy with them. shortly after getting them acclimated, they began breeding like crazy. the thing that has me concerned is, she has gotten alot bigger in one spot about 2/3 down her body. the male is still breeding her (I think) Im not sure if this is normal for gravid snakes becouse this is my first breeding experience. I just want to be sure she is okay, I like the idea of them breeding but my main interest is my pets safety. If anyone could give me advice it would really be appreciated. I tried to call kevin at NERDS for his opinion but unfortunatly it is sunday. I will be taking her to the vets at the beginning of the week to be safe. thanks for your time, corey I can provide pics if it would help