Stress and Early Pregnancy

So I got my BFP a little over a week ago and have my first appt tomorrow. Im a 4 weeks 4 days today. I got a very sad call last night and found out my grandmother is critical and in the hospital. Ive been trying to stay calm but its hard! I felt crampy last night and still feeling some today...probably bc Im stressed. I would need to drive 8hrs to go home and see my grandma and I am worried about making such a long trip during early pregnancy.m as well as how upset I'll be seeing her. My blood pressure was high last night after I spent so long crying and talking to my family about whats going on. Any advice? Not really sure what to do or how to feel or how to react.