My last period was May 10th. I have been sexually active since then but my boyfriend and I use protection. I still haven’t gotten my period, and I’ve been having sore breasts for about 2-3 weeks. My app says I’m 37 days late and i recently took 3 pregnancy tests and they all came back negative. I did stress a lot in the first week of June, but I don’t think that would affect my cycle to that extreme. Does anyone have any advice?