Could I Be Lactose Intolerant?

So lately i have been having a lot of stomach problems. I always have had a sensitive stomach but the past 5 years it has really calmed down except for recently. I've noticed when eating things that has cheese on it i have become extremely sick after.. i've had horrible horrible diarrhea that just does not stop and my stomach gets soo crampy and i feel nauceous all at the same time, it's like i can feel the blood draining from my face i feel so sick. Then just tonight i had macaroni and cheese not even thinking about the cheese and the same thing happened. i'm absolutely miserable and had awful diarreah again, not to be gross but the past few times have been like the worst i've ever had it's definitely not normal for me. I prob will go to the docs to get it checked but are these all signs of lactose intolerance? Thanks!
also i'm a 28 yr old female