Heavy period

Amy

I was 30 days late I thought I was pregnant tested and it came back negative and now I'm bleeding heavier than I have ever done in my life. I'm having to change every half hour to an hour it's so heavy and throughout the night I have to use triple pads which are reusable as I cant use disposables. Is there anything that anyone recommends I do that I can keep my iron up and deal with the cramps a lot better? I'm not anaemic but I have been feeling dizzy and feel like I'm gonna pass out at times. Thanks