So I used to have 27-36 day periods. Found my blood pressure was way to high like dealthy high so I got on bp meds. It made my cycle go back to 27 days for 6 cycles since taking it.. I was suppose to start sunday (day 28) idk when I ovulated maybe day 14-16 anyway..didnt starr..took a digital first responce test it was negitive. I have a low and maybe open cervix (feels like wide huge circle). Today, day 29 I still have low cervix still feel like that circle and cramps and 14 days since fooling around. I bought rapid first responce test meant to be used after a missed period. With all the info I gave..would it be correct it i took tommrow morning (day 30)