Period Question

So I am currently 19 but almost a year ago when I was 18, I lost my virginity and ended up bleeding for days straight afterwards and for the next two or three times we had sex. That I know is normal. But ever since I've lost my virginity, my period has acted a lot different. Before I lost my virginity I was bleeding super heavy. I used the thickest pads I could find and usually on my first and second day I would run through 4-6 of them easily throughout the day and bleed through it during my first night. Since losing my virginity almost a year ago, I can now wear thinner pads and only go through 2-3 on my heaviest days. Also, I've noticed that I've started cramping less and less and getting less and less moody as the months go by. Is this normal or something I should be concerned about?