Too soon to expirience pregnancy symtoms?

I ovulated between the 18th and 24th this month. We (me and husband) have been at it (not intentionally) the whole time. I feel nauseous this whole week after ovulating. I only felt a little bit of ovualtion cramps earlier this week. Today I was very nauseous a little more than the rest of the week. Is it in my head? I get a little lightheaded too. With my two pregnancies 9 and 13 years ago, and one miscarriage before the girls, my nipples (sorry TMI) hurt, a lot. This time not yet. Also today I'm getting a dull pain on my left side of what feels like where my uterus is. When did you ladies expirience symtoms? Was it this soon? I would be elated if I was pregnant. Maybe I'm just hyper sensitive because I really want to be preggers?