what are all these abbreviations !?

Chelcie • 28. Mum to 2 girls 🫶🏼 UK
Can one of you ladies explain all these abbreviations that are being used? 
I know TTC and like CM is cervical mucus..but there's loads you're all using and I've got no idea 😂 I don't know if this is an American thing as I'm from the UK. Or am I just uneducated 😭