period during dance class?

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So this might be a weird question but I'm going to start taking dance classes soon. I always have irregular periods, in fact I am 2 days late now. But I alwayswear pads, and have severe cramps and nausea. What will I do about dance classes? I've heard pads are uncomfortable to dance in but I've never worn tampons and I'm kinda afraid to, I like being able to see how full the pad is instead of just guessing. It helps me with knowing I'm not going to leak since I'm always afraid of that. Any tips about what to do for dance?