Hi there and welcome to the forum. I'm sorry, first of all, that you have some difficulties with your mom. I do so wish you could talk to her. Maybe conversations like this would help you feel closer to her? But if that isn't possible, then are there any other females you could talk to? Grandmother, older sibling, cousin, aunt, female health teacher, a good friend's mom??? I just think you could use some support from someone around you and someone to just have a conversation with.
Do you see a doctor at all? You could also bring these things up wtih your doctor. Would your mom understand if you wanted an exam? Perhaps she could set that up for you.
Periods can be pretty uncomfortable. They can be different each month as well. Cramping and some odd pains aren't unusual. Heavy flow also isn't unusual. I began using tampons as a teenager and have ever since. The issue of odor that you describe is not one I've experienced. It's a matter of changing the tampon or pad frequently. As a tampon holds things 'in' perhaps you would get less odor. They also make tampons with fragrance. It may be time to try one of these products.
Sex doesn't help with periods or any of these things. Not sure who told you that but it is bad information.
I do wish you luck dear.
I would say bite the bullet and talk to your mom and tell her t he problems you've been having...I had the same issues as you and it turned out to be fibroids which is like blood clots clumped together I had mine surgically removed, but I do believe now they have procedures that are less evasive... also with the heavy blood flow you may need to take iron pills as it may be causing enemia (low blood levels) which is why you may be feeling faint...I can only tell you what I've been through, but a doctor can diagnose you.
The fibroids caused the severe pain as you mentioned it was the pain was just like you described that gut wrenching pain which is unlike normal cramps with the removal of the fibroids. I have no painful cramping throughout my cycle