I have postnatal depression and on anti-depressants butI find coming up to the time of the month my mood really drops. I feel even more tense, snappy, angry, weepy etc. Last night when tiding my sons room I opened his wardrobe doors to have his toys fall out. I lifted his box of knex and threw it around the room. I ended up having to help him tidy it up. The night before that he head butted me for not doing his zip up quick enough. I automatically hit him on the side of the head. Not hard but I know I should not have done that. Ds is 6 and feel I am loosing it.