Hi iam a 36 year old mother with a thyroid under control (75mg) person, and having regular cycle of 28 dys. I have a daughter of 15 years old and trying a second baby as i am 2nd time married past 3years. I missed my period fr 19 days as i had last LMP ON 30TH June and had 2negative test, including the blood test. Could i be pregnant?