Advice

So on December 15th I started my period but this period was sooooo different.. it was heavy. It might b normal for some people but for me it wasn’t. I NEVER had a period like this at all, I had blood clots the size of quarters I had to change my tampon 2-3 hrs all the time. It ended December 19th. But now I haven’t started my period for January, I spotted on Jan 11th ( not the whole day ) & that’s it. I have taken a pregnancy test on the 16th, 19th, & again yesterday (22nd) all were negative 👎.... has anyone else had this problem before? Please anything will help