Now im confused

Hannah

Okay so my last period was on 13 of november was on for 5 days. And i havent been on since. I have done 6 pregnancy test and still says negative. What shall i do?

I keep getting bad heartburn, very very sore back, constantly tired, headaches, feel sick but not being sick, cramps i. Tummy. But they are start to hurt a little bit more than normal. I just dont know what to do?