Bach Flower remedies. They are an all natural "mother's helper"! (and therapist and stress reliever, and sanity saver in one.)
You might try some "White Chestnut" or "Honeysuckle" Bach Flower remedies. These can really help anxiety and obsessive thoughts. We use constitutional/classical homeopathy also. Here are several links about Bach Flower remedies. They are all natural, safe remedies for stress, upset, fear, depression, etc. You can select those that are best for you based upon reading about each one or taking the quiz at the remedy finder (first link). You can choose up to 5 or so and mix a few drops of each in water and sip as needed, or take straight in the midst of a stressful situation.
Guaranteed to help.
I love Rescue Remedy.