Close to labor sign?

I’m currently 32 weeks prego, and I can already tell this baby is head down, getting really engaged in my cervix. Well last night I literally wiped a speck of blood from me the size of probably 2 sesame seeds if they was together. Plus been feeling crampy like light period cramps. Is this a sign labor may be right around the corner? I go for my final ultrasound this Thursday :) can’t wait to know his actual size, even thou I can feel he’s definitely long legged.