I hear ya, Zara. Even I get my hope highs and end up with a BFN. I so dont wanna think about it but it's like impossible not to. I don't even think sperms really do hang up inside for 3-5 days. Because if they were we would have gotten pregnant long back. I think sperms could only survive for 24 hours not more - they need to do a lil more deep research on that. We just give a gap of one or 2 days in between of our BDing schedule and still getting BFN - it's weird you know.