I don't know if I could be pregnant, help!!

I haven't gotten my period since May and it is now July. I have never missed my period so I'm very concerned. My boyfriend and I went on a trip together early in june and had sex quite a bit, without a condom. I am on the pill, give that at the time of this trip I was not. I have never spotted in my life but I did a couple times within the span the trip to now.. i dont know if thats good or bad. I took a pregnancy test about 2 weeks ago and it was negative. I took one now and it was also negative. Just wondering what people think could be my problem here. I feel as though I'm not pregnant but I'm not for sure and I'm very concerned about this..

Thoughts?