Very very important question!!!

Melissa • Baby #1 coming in October 👶❤️
I keep mistaking pregnancy symptoms with pms. How the heck can i difference one from another!? Im finding myself so sad every month. Any advise? I try to be calm and let God do his thing but is almost impossible not to go nuts on every symptom. 
​Af came today maybe my hormones are writing ?
​How you girls don't lose it while ttc'ing??? Advice very much needed!!! Please, share with me your experience!!!
​Im blue ??