 [ Symptoms ] why do my breast nipples stay hard and sore i am 19 years old my nipples have been quite constantly hard and also quite sore to the touch but there is no discharge i am also a few days late on my period i took a pregnancy test but it showed up negative i am not sure if this matter but i am currently taking medication for bacterial vaginitis  what should be my next steps [ Disease ] you can take 2 25mg antihistamine benadryl every 4 6hours but do not take anymore than 6 in a 24 hr period