Cramping

Hi, this is my first post and I'm hoping to get some advice here. I've learned that I have a very irregular cycle, although I've been spot on in January. But for my period in February, I'm 27 days late. I'm very nervous to do a test, so I haven't done one. Fridaynight I woke up from a very bad cramp in my lower abdomen, so I thought my period started. Nothing. I've got these cramps like every other day and just a couple minutes ago, I got a very heavy one. Feelings nausea's, shaking, sweating and hot during it. What do you guys think?