got really dizzy and ect... at work ?

Well I felt good this morning I ate and had a drink before going into work, I clocked in and started stocking before we opened, I all of sudden got dizzy, and my body got so heavy, I got so hot and just felt really horrible... I called the hospital she said go to er but then said wait have I called my doctor i said no, and she said call them first and I did and after being on hold forever I left a note for the nurse, she called back and said she don't know if I should go to l&d or not 😐.. so I'm lost ... I all of a sudden  feel better and she still says she doesn't know if I should go or not... I've been feeling cramps lately and a lot of pressure... so idk what to do ? Any ideas