i am sure your 2 year old is going through a lot, too, and probably a little harder to handle than usual.
maybe try some of the traditional medicinals easy now tea? you can give it to your 2yo, too. or lemon balm leaf tea or tincture? there is a homeopathic remedy for mood swings called sepia, which worked for me for a while, but i'm not sure if that would be right for you. i wish i could be more help but i'm sure lots more people will come along and help.
the only other thing i can suggest is to keep your toddler busy busy busy with things to do and explore. i know that's tough, but i feel like if my kiddos are bored, that's when they start doing stuff that will make me lose my cool eventually.
good luck to you. i know this must be so so hard. <3