-horrible cramps at start of my period to the point where I'm sure I will throw up and can do nothing but lie on the floor and writhe for at least 2 hours.
- really bad bloating/gas problems almost every day
-heavy periods that come at random times

I know the symptoms are general and vague but I'm looking for answers for my constant bloating problem and serious cramps... do you think it could be endometriosis?

The horrible cramps are usually one sign of endometriosis, but they could also simply be just horrible cramps. Your other two symptoms don't seem to be significant but I'd still check with your doctor and get an MRI/ultrasound (sometimes they cannot be found with either and they must do surgery to see).