possible pregnancy?

Sara
Hey ladies. So my app told me that I'd be ovulating in the middle of August. I didn't notice any CM or change in libido so I wasn't sure if I actually was or not. My last period was August 6-11. Around Labor Day weekend my libido was so high, I was having CM. I'm pretty sure my ovulation predictor is off. I went more with my body over the app. I'm overweight, and have depression and am on meds to control that. My husband and I decided we wanna start trying so having a baby would be a blessing for us. I never left my legs up after sex and I was on top. Three times we had unprotected sex. I'm stressing that trying for a baby is going to take a long time for us. I'm trying to find things to occupy my time. My period was supposed to come (it's always irregular) but I still haven't gotten it. I've been having a lot of naseua and vivid dreams, my sense of smell has been heightened so much. When my husband ate dinner (he's in the navy and at training so he doesn't eat dinner with me) when he kissed me I could smell whatever he ate and it was making me sick. I've been really hormonal lately too. I took three pregnancy tests but they all came back negative. I'm not sure if it's too early to test or even what to think. Please help me find some peace of mind!