Apart from the phlegm part (I can't say I've experienced that) I can relate to everything!! Especially the tiredness I have never felt this exhausted ever! And I've been through labour and the new born sleepless nights ha
https://www.theguardian.com/lifeandstyle/2012/jan/23/pregnancy-first-trimester-symptoms
https://www.theguardian.com/lifeandstyle/2012/jan/23/pregnancy-first-trimester-symptoms