18 days late BFN

Last visit from AF started April 27. I was supposed to start again June 3rd or around that date. May is the first month that DH and I really got serious about trying for baby #2. I have been off BC since October 2016 and we were trying to let things happen naturally like it did with DS but we had no luck with that. The Dr gave us some pointers on how often to do the baby dance to help with getting pregnant and told us that if in a year we are still having trouble we'll discuss our options. So here we are first month of really really trying and I am late but am getting BFN. I am trying not to stress but I am getting super frustrated. Anyone else had something like this happen?