Fpreg GLs:
https://www.mangago.me/read-manga/oshikake_nyobo_kodomo_tuki/
https://www.mangago.me/read-manga/renai_idenshi_xx/ (women can impregnate other women but I don't remember if there was any pregnancy in the story)
https://www.mangago.me/read-manga/the_wolf_steals_the_sun_athrea_scans/ (side story only)
https://www.mangago.me/read-manga/best_friends/ (omegaverse, non-con; side story only)
https://www.mangago.me/read-manga/eve_and_eve/ (chapters 3 & 4 only)
https://www.mangago.me/read-manga/on_the_promised_night/ (one-shot)
https://www.mangago.me/read-manga/fox_s_wedding_1/ (one-shot)
Not sure what child rearing means, but here are some GLs where the main couple takes care of a child:
https://www.mangago.me/read-manga/ohana_holoholo/
https://www.mangago.me/read-manga/ebisu_san_and_hotei_san/
https://www.mangago.me/read-manga/flower_of_youth/
https://www.mangago.me/read-manga/akazukin_ni_taberareta_oukami/
https://www.mangago.me/read-manga/umineko_sou_days/ (incestuous side couple)
https://www.mangago.me/read-manga/mama_mama_amano_shuninta/ (one-shot; cheating)
https://www.mangago.me/read-manga/shiori_and_yuki/ (one-shot)
Are there any child rearing yuri manga/ and or magical fpreg