ok so firstly i have the implant so i dont have regular periods & to be honest barely ever do unless i am extremely stressed or depressed then i usually get it. I thought today was friday and tried to phone the docs but it's saturday lol so asking here to see if it's nothing 
So 2 days ago i woke up and felt like i had cystitis starting (only ever had it before when i was preggers) so for precaution took a test that day & it said negative so off I went to Tesco to get something to treat it instead of bothering the GP. Later that day I then started to bleed alot (and still am) so took it that I was just having a period and all is well, yesterday i had extremely bad cramps really low down in my stomach and i was physically sick a few times aswell out of the blue, today I have woke up and had this horrendous pain in the back left side of my body - it gets worse certain ways I move and hurts when I breathe.
Is any of this normal things that can happen with a period? I tried google and its coming up all lots of serious stuff so i am turning to you all for advice 
