Which will work better?

ok so lately my have been very sore lately, from my period, and i have been sleeping with vaseline and bandaids on my so they dont hurt when i sleep. but i was wondering if it would be better if i put vaseline on, then cotton circles (like to wask your face with) and then just sleep in a sports bra to hold them in place. so far the vaseline and bandaids hasnt really helped long term, the pain usually comes back in about an hour. so would the sports bra idea help? it would only be to sleep in. thoughts?