Need a second opinion...

My doc put me on b/c because I wasn't having my periods. Well i started taking b/c last month on the 1st.. Didn't quiet get it finished because I had a full blown period For about 3 weeks straight... I didn't know if it was from the b/c so i stopped before the month ended.
So my period Was from may 9-29th... Now I have yet to start another period, and my boobs/nipples are sore.. I have super bad acid that even makes me throw up in the mornings that feels like straight acid... Which i never had when I would have my periods before. I do have unprotected sex. Trying to have a baby....

My app on my phone says I shouldn't start until next month around the 18th... Should I wait until then to test?? Or is there no way that i could be pregnant..

Thanks ladies!