I have a 2 year old girl, and haven't had any of these for the past year. Around 5 month ago I started taking the cerelle pill so stopped periods, but lately I've been feel sick or being physically sick on a daily basis, I found that I my nipples have been leaking also, but taken pregnancy tests and they've all come back negative, other symptoms have been slight headaches, dizzy spells and shortness of breath as well as a horrible pain in my lower back, all which I experienced with my first pregnancy, should I be concerned?