Can you keep a secret?

So another day of BW & US down this morning. The office will call me later today with my results, however, the ultrasound tech said that in his opinion my egg retrieval will most likely be on Saturday 21st (Feb), but maybe Friday. Planning ahead for all this is what I find most difficult. I called my DH(dear husband) and told him this and he gave me this big speech how he wants this to remain a secret. We told our family and friends the second time we went through IVF and he said he felt embarassed and mortified that everyone knew our private business. This is understandable since the doctor primarily pointed the finger at him. That being said, I promised to keep it a secret from everyone this time.....mom, sister, BF. It is so difficult because I talk to my mom every morning and she calls and if I don't pick up, I need to think of a lie to tell her! I am a horrible liar. Saturday night we have dinner plans with some friends so my DH and I were trying to figure out which one of us would tell what lie to the couple if the egg retrieval happened Saturday! UGH! It just gets so confusing telling so many tales! These are the cards I've been dealt so I need to suck it up and deal with it right?
On another note, speaking of secrets....for the second time (today) I saw someone that I knew at the fertility clinic. It was a girl from high school who played on the basketball team. She would not even look at me after we recognized each other. I wanted so badly to tell her that everything would be okay because I know how hard this whole infertility thing is (3 failed IUIs & 2 failed IVF's). This was the second time I saw somone at the fertility clinic that I knew, but was not necessarily friends with. It just makes me think that SO MANY couples struggle with getting pregnant. At that moment it made me feel a little less ALONE. I thought there are so many other people out there with this SECRET too!