It's lovely to be able to come on here and talk about TTC. It's very hard for me to talk to my family as my sister just lost her baby at 8 months pregnant a few weeks ago. I do feel awful for ttc now but we had planned for a baby long before that happened. If i did get lucky I think i would have to keep it under wraps until next year !! I think it will always be hard to talk to her about it tho !
I know how you feel. My brother and SIL found out they were pregnant in July(after we had started ttc) and sadly she miscarried at 14 weeks(baby actually stopped reading at 9 almost 10 weeks) but when we finally did get out bfp the other week, I told my close family, and I was really worried about telling my SIL. Now I know 14 weeks isn't 8months, that's for sure. But it's still a loss none the less. I told my brother first and I let him make the decision in telling his wife. He did end up telling her, and it took her a day or so, but she finally text me to say congratulations. I called her to make sure she was okay, and she told me that it's not that she wasn't happy for me. She just hadn't given herself the proper time to grieve for the baby they lost because right after they lost it, their daughter went in for open heart surgery.
So needless to say, there's been a bit of guilt on my end with getting pregnant. Also, DH's cousin has been trying for about 5 years with no luck and finally had IUI and was supposed to find out the results the thursday before I found out I was pg. Turns out it didn't work, so that made me feel even more guilty. But DH just told me, that we can't control how God works, we just need to enjoy the fact that he's given us a baby. He said it's fine for me to feel sad and reach out to them, but I shouldn't let it take away from my own happiness and I definitely shouldn't feel guilty.
Anyways, sorry, that was long winded, but that's what's happened to me in the last few weeks. So your not alone with the guilt in that way. I'm still going through it. Not as bad though, but it's still there
As for the AF, CD1 is considered your first day of fully red blood flow. So spotting doesn't count.