I am hetero Factor V Leiden - 2 weeks after getting the 1st pfizer covid vaccine I developed blood clots in my lungs. Or, if you had no symptoms, when you first received a positive test. This pointed the investigators to activity of factor V as well as factor VIII and factor X, two other major clotting factors. Any of the currently authorized COVID-19 vaccines can be offered to people who are pregnant or breastfeeding. Engage in a serious and supportive conversation where you can address fears and map out the potential benefits or side effects of receiving a vaccine. //-->