Ectopic

Newly pregnant with an unplanned pregnancy...I have two kids 16 and 12, with a previous relationship (I’m 38...) I think I’m about 6 weeks along...So far I’ve had no real typical symptoms except maybe a little more tired than usual...I have had persistent dull pain in my right lower side. I only have one ovary (right side) from a previous surgery. I’m concerned about possible ectopic pregnancy...I really don’t want to go to the ER but since it’s the weekend not sure where else to go to get an ultrasound before Monday...