Thanks for query,
You have hormonal
imbalance leads to your irregular period & mid cycle spotting.
The reason of your breast pain
may or may not be associated with it as it looks like more of muscular rather than due to endocrinal imbalance.
Your pap smear
& urine test should be considered but has no significance to this pain.
For your breast pain you should take opinion of orthopedic doctor too.