Bright red blood on and off pp?

I thought my bleeding was slowing down, it got brown, and then last night I didn’t wear my belly binder (idk if that’s a factor) and I started bleeding heavily again throughout the night. No clots, just lots of blood again. Is this normal? I’m two weeks pp after c-section. Should I call the doctor? Is there nothing to worry about? I ran out of my ibuprofen (prescribed by doctor) and the pain feels stronger in my stomach (probably because I’m not on medicine). Should I take over the counter ibuprofen? Is the pain normal at this stage?