FYI, I sent them a 'hey, I'm pregnant!' letter from the doc with my last form, and my latest form now has a period of June 8th to August 16th, so they obviously apply the 6 weeks pre and post EDD exemption at the same time.
The EDD is coded into a screen which automatically calculates the 6 weeks pre and post birth exemptions

We're still waiting on the DSP claim, its been about 3 months. No news is good news, right?
Processing time for a DSP new claim should be 49 working days - I really hope you get a good outcome soon! I agree with Lulu - give them a call and see if there is any progress. Just in case you're not aware, the rules for DSP require that the illness/injury/disability is be fully treated, diagnosed and stabilised - that may be why it was knocked back last time?

Good luck!