Eclampsia is when convulsions occur following high BP
i.e. > 160/100
But when BP is high one can definitely have epigastric pain
and chest pain
. As your bp is within normal range ie it should never be more than or equal to 140/90 , u neednt worry about being eclamptic. All you need is to keep a record of your bp regularly.
If you have been constant pain in chest and shoulder , its good if you see a physician preferably a cardiologist. As in pregnancy
cardiovascular changes occur and many problems due to underlying heart disease
are manifested first time during pregnancy itself.
Not trying to tense you but once you meet a cardiologist you would be sure that you are fine.