VERY IMPORTANT I NEED ADVICE NOW!!!

I’m on my period (I think it is anyway) and I’m bleeding A LOT heavier but I’m not cramping! Haven’t had one cramp for three days I’ve been on my period. That’s NOT normal!! And it’s not normal for me to bleed so much it soaks my entire tampon in less than an hour!! Me and my husband do have unprotected sex. I’ve had a lot of tiny, medium sized clots come out. I doubt it’s a miscarriage but I’ve NEVER in my life have had period with no cramping at all!!!!