Late period-help.

Ashleigh
Okay ladies, my last period started 05/15/16 & lasted through the 19th. It is now June th 29th & NO period. I took home preg test. 1st was positive next 3 was inconclusive (lines wouldn't completely load) 2 negative & a positive one. I went to the pregnancy center & they said I'm not pregnant by their urine test. I am what 17 days late, my boobs hurt, I'm cramping & I do feel throw uppy at times but NO PERIOD WHAT SO EVER. I've been cramping for the last week and a half & my boobs started hurting 4 days ago & so did the wanting to throw up. I have NEVA been this late, what's going on. Starting to freak out