Too much sex during fertile days?

I just received a positive OPK on 2/24. We've been trying to follow the SMEP plan, so have been bd'ing every other day up to the + OPK. We BD last night around 9pm, and then again around 3am. Will this hurt our chances? And if following SMEP should I count our 3am session as today's BD, or BD again tonight? Thanks!!