Period suddenly heavy, what do I do?

So I am 19 years old and in college, and I noticed yesterday that my period is suddenly really heavy. I also noticed that this is my second period this month, I got my first one on October 3, and it lasted about 7 days which is normal for me.

Yesterday, I got my period for the second time this month, and it seems really heavy, like I was bleeding everywhere every few minutes. I don’t exactly know how much, but I am worried about blood loss and being sick because of this. I also had really bad cramps last night, which rarely happens, I took ibuprofen and used a hot water bottle but it didn’t do much for me. This morning, I am a bit nauseous, and overall tired.

Is this normal? I’ve never had this issue before.