4 to 5 dpo

I have been experiencing lower back pain since yesterday 5.30.16 I woke up at 8am took my bbt it was 97.3 I normally don't take it so I'm not sure what my original bbt is so anyways I fell back to sleep got up at 1 pm started my day while I was out I was nauseous plus I woke up really congested so I'm not sure what going on n thru out that day I was cramping on my lower right side off n on but Idk what's going on help n this app says I'm like 1dpo my other app says 5dpo. Confused right bout now sorry for the long msg