Hi there guys, I'm new to this and trying to understand where I am at 

I'm in my late 20's ( almost 30 oh boy ! ) and ever since my mid 20's my periods have been worse, though it was just the phase or a bad period and symptoms were worse than normal. But now that I'd gotten older like 2-3 days before aunt flow comes it's like on the floor in whole body pain that just shoots out of know where to the point where laying in bed is uncomfortable. I notice it wasn't just normal pm's when I was making pasta and I just started to break down crying making pasta. All the emotions even if you look at me oddly or something on tv that wouldn't normally bother me will set me off. 1-3 days before my period I'm very closed off and just want to dig a hole and sit in it and just let me be. I can't keep yelling at my boyfriend and my family, especially when they are trying to help or at least try to make me feel better. I just don't know how to go talk to my DR about it because I don't know how to pinpoint what I'm feeling or when it comes on it's like the Tasmanian devil in my house, I don't try to be but I'm like mega b*tch and it's terrible. I've been on other sites to see if I can find some online help but most I've read are not in my age bracket or much older than I am and just don't know how to deal with it.