Anyone else relate..?

So, I have endometriosis, well, my OBGYN believes that I meet the criteria, but unless I decide to have the surgery, we can't be 100% sure. However, what this post is actually about. My cycle has finally gotten regular, the last 8-10 months my period has come right on time, usually between day 30-32 of my cycle. But normally I have extreme, crippling cramps 5-7 days before my period starts, as well as other typical PMS symptoms. Yet, I'm suppose to start my period in 1-2 days, and I've had NO cramps, no anything other than bloating (which is nothing new for me since I have intestinal problems, I'm nearly always bloated), and the last 2-3 times I've had sex it has been pretty painful. This is really new, and I'm really scared that my periods are going to start getting irregular again. Anyone else ever had anything like this?