How long can building go for? I have a Spider female that has been building with like golf size follices for about 1month or long. She has been about 4 times during this period. She has a small lump in the middle section and the lump on her belly kinda like a beer gut lol. It driving me crazy as my Yellowbelly female has already ovulated and she went from building to ovulation in like 1-2weeks max.