I think I might be pregnant, sooo today I had an appt to get back on the depo shot at planned parenthood and I told them I might be pregnant so I took the test and it come back negative and so they gave me the shot anyway, and then told me to take another test in 2 weeks. I have the symptoms of lower back pain & my ribs hurt badly, and my brest are sore to touch, my belly feel like its getting hard.. could this be harmful to the baby if I am.! Please help me