32weeks with a 5year old toddler

Mga mommy, i dont know if this is normal but i always cry everyday for several weeks now with my 5year old toddler. She's a girl and very hype, i cant control her anymore and sometimes hard headed. Before i got pegnant i have a vey high tolerance about it and used to explain eveything without yelling and getting irritated. Please enlighten on how to calm myself :( :( it's really deppesing to always cry specially that my body is always aching together with cramps ???