anyone experience

b2020
Anyone experience this? 
When I have a period I don't have cramps really but it feels like everything is about to fall out of my vagina. There is so much pressure and pain from it. Weird thing is that I don't bleed heavy at least not the first few days. I have the brown old blood mixed with a little red the first 2 days then I bleed heavy one day and the last 2 days it's back to brown blood