hormone madness

So, a couple of months back, I mentioned to my clin psyc that I thought I could link my low mood to my periods - so my mood plumments just before and during my period, and I get ridiculously teary about a week before it starts. So we decided I would try taking the pill again - which I haven't for years- and this is the first month I have been on it. I'm 3 days into the 7 day break, and omg i have never had such god awful PMS in my whole life. I've had period pain the whole month long, and now I literally feel like my blood is boiling and have the worst cramps :( 

Also not sure its had any effect on my mood- i know its just the first month, but given how its bad enough having period pain for a week, let alone the whole month, I think I might give this idea a miss. 

on the plus side, yesterday i got as far as dissmantling a disposable razor to get the blade out, but then got back in control of it and just threw it away. I think I just needed the comfort of the routine or something.