Me and my boyfriend had an intercoursr and the codom broke...so the next morning i tookthe plan B and within 3 days there was light bleeding for about 5days. Now my actual period is late , took a pregnancy test on the 11th of may and it came negative but my nipples are sore and senditive to touch and have cramps on the right side of my back/above my hips. When i inhale fully where your stomach inflates up to its highest that side hurts. My period is a week late now. I am not sure whether i could be pregnant please help. Thank you:)