So I had my period twice in may 2 weeks apart then 2 weeks after I got it in June the 6th-10th and now I haven't gotten it since I had unprotected sex 2 days after my period on June but I took 3 tests and they all came out negative im not pregnant so I have no idea what's wrong and I did end up take the morning after pill twice a month around may so I think that may be a factor so irresponsible of me but can any one help