According to Fertility Plus, there are no charts showing E2 levels during stimulation since there is a wide variation depending on
how many follicles are being produced and their size. Most doctors will consider any
increase in E2 a positive sign, but others use a formula of either 100 pg/ml after 4 days of stims, or a doubling in E2 from the level taken on cycle day 3. Since your numbers went up above 100 on day 5, you're pretty close...so I wouldn't worry too much about it.