What can I do for my heavy periods?

I had my son January 13th last year. And I had my first period (without birth control) January of this year and it wasn’t terrible, it only lasted a few days longer than my usual. I just got my 2nd one last night. But today I have bled through tampons and night time pads together and my stomach and back is killing me. I’ve tried Midol but it doesn’t really do much. Ibuprofen and Tylenol do nothing for me. I have issues with the OBGYN’s near me because no one listens. And I don’t agree with birth control and stopped taking it a long time ago. But what do y’all do about bad cramps and heavy bleeding? I’ve never had a period as bad as this one is. I’m still able to function like I normally do but I’m so frustrated. Especially after not having a real period for so long.