Emergency!!

I really need help!
For the last week I've been so insanely emotional, I literally want to burst into tears 24/7, I don't feel like myself at all! I'm so tired all the time and feel just so sad constantly! Also I've been feeling horny all the time, like constantly all day horny which I've never experienced before which doesn't make any sense!
My period was 6 days late, then on cycle day 34 I bled for a day, then it stopped completely for a day, started again for a day then for 2 days just had light brown discharge, I'm currently on cycle day 5.
Can someone please tell me what is going on with me?! I feel so hopeless!