My partner and I had sex on the 8th, 10th and 11th of this month. My <a href="https://play.google.com/store/apps/details?id=com.glow.android">ovulation calculator</a> thing says my most likely time to get pregnant was between January 10th and the 15th. I was on my period, have an iud and he "pulled out", but I just have a gut feeling i'm pregnant. In addition to the headaches, back pain and random sensitivity to smells. Any input would be awesome!! Thank you