Rainbow Baby..

Anyone carried/is carrying a rainbow baby now? I miscarried in Feb and am now pregnant again. At week 4 and 2 days, it may be early but I am experiencing sleepiness in the daytime and insomnia at night. Also, my nipples are very painful to the touch. Breasts are not sore though. Anyway, my question is.. did/are you doing anything unique/different from the last time to “protect” your rainbow baby. Also, when did you go for your first scan? I’m wondering if I should wait till week 8. (Appreciate answers in English please)