This is a really tough question. We didn't tell many people when we first started trying (which was right away). My sister knew and I told my bestie but no one else. Then trying dragged on for months and years and I was just so tired
of people asking when we were going to have kids (plus it hurt to get that question at that point), so I finally told some people. MIL was the worst offender and I yelled, cried, and pleaded with DH to just tell him mom the truth. I
think he was embarassed but everyone thought I didn't want kids or wouldn't let him try for them (I was in school so I think that played a big part of the assumption). He didn't end up telling his parents the truth until I had my m/c. I
told them he needed to tell them everything - and I think he felt better once he did.
As far as telling with the BFP, we never wanted to tell until after we made it through the 1st trimester, but we only got to 6 wks, and it was bad from the start. Then they thought it could be ectopic and the dr. that called me about
getting the methotrexate shot said the most horrible thing on the phone and I was in hysterics. I needed to have someone to talk to. So I told a few people b/c I was heartbroken. This time around, I told my sister and bestie right away
b/c I wanted them there for me from the start. This go round we suffered from vanishing twin syndrome so I had mixed feelings there and was terrified the other baby would have problems too. Craig had a fever when I was 5 wks, so he
stayed with his parents and told them then (and his siblings). My grandma got pneumonia, which caused heart failure, so I told her too and my mom when things looked bad for grandma, at about 10 wks. Told my brother that weekend. We are
13 wks tomorrow and are finally now telling friends and the rest of our family.
I say all this b/c my bestie had a hematoma with her DS after 13 mos TTC that caused a lot of bleeding and theatened m/c, but she didn't tell anyone and cried every day. Her sister finally said to her at 9-10 wks, "N, I think you are pregnant
and you seem to be having a hard time and I know you obviously are trying not to talk about it, but I am here for you and I want to help you so if you have anything you want or need to tell me, please do. Anytime." She said it was such a
relief to finally tell her sister and have someone other than DH to turn to, b/c they were both so scared that it was hard to think straight. When you are scared/stressed/whatever, it can be a huge help to have someone to talk to about
everything. Hopefully you all have any easier time with things, but if you have any struggles, consider telling a friend or family member who can think clearly and can be there for you.