Anger problems

So lately I've been soso angry do i have severe anger issues related to a dark dark past but I acknowledge them and have been in therapy in the past. Anyways I don't know if it's pregnancy hormones or what not but ive been raging and having terrible thoughts without going into details. What do I do this is crazy is it hormones that's causing this? I'm 21 weeks I have a child at home I love but am so short on patience and would never hurt him but get so annoyed with him over small things and then feel guilty. I am considering asking for meds just for this time to snap out of this! 😔😔😔.