Thanks for your concerns. It is a good sign that it is going up but still a bit low. I suspect that the main issue here is hypovolemia
and low blood pressure from dehydration
given the circumstances. Indulge with plenty of fluids, rest for now, and may resume lisinopril
only after your blood pressure has returned to your normal. Please keep well hydrated during and after hard labor, especially when hot.
Dr Brenes-Salazar MD
Mayo Clinic MN