hi im a 26 year old, had sex on june 25th at 1 am and was on the second to last day of my period, condom broke and boyfriend came inside, took plan b later that day at like 12:30 pm, was some spotting and cramping the for about three days after i took it.period has not come and i took a pregnancy test on july 28th and was negative.have been having cramps on and off for past couple days. today while in the shower was feeling my cervix and it was closed really tight. could i have taken the test too early? or are the hormones from plan b really messing with me?