7 months then BOOM here's your period again

I want to scream but I'm the only one awake in the house so I'll just scream here instead: 7 months with no period after years of peri weirdness then today I woke up with a full fucking period & all the fun cramps & pissy mood. I am so mad I have to start the 12 months clock again. I am so mad my body hurts so much. I am so mad it was my cute pajama bottoms.