preg or not?

Hi all. I have missed my period for 3 days. Got all the preg symptoms but pee stick shows negative. I had a dnc/abortion due to medical reason done 2 months back. Making matter worst.. i am also suffering from a shoulder ache. Dr. Google is telling me things like this could be ectopic pregnancy. Anyone has been through the same before? Having a obGynae visit next week to have this check. Just want to mentally prepared for the worst if any. Thxs.