too early for symptoms?

I had a miscarriage at 13weeks in September of '15. and my fiance and I did everything right to try and conceive this month for our rainbow baby. I ovulated on the 30th of October so i am currently 7dpo. I've had migraines, extremely sore breasts and morning sickness in my last pregnancy then again I did not get very far with my son. This time since i am too early to tell. i am having headaches, back and neck pain, tight pain (not cramp like) on my left side when I was 5dpo. i feel nauseous like I'm going to throw up but when I get to the bathroom i sit there feeling so sick but I don't actually throw up. (happened 5dpo at night) I still feel nauseous but not like that. I'm EXTREMELY mood and REALLY sensitive. the slightest things can make me blow up and the slightest things that usually doesn't phase me makes me cry.. like I burst into tears. (happened today)

No implantation bleeding yet but i have seen women on here say you don't always get that.

Could this be my time?? Could this be it??