Feeling dizzy during pregnancy
is quite common as pregnant women can have a lower blood pressure than normal. Also heartburn
and acidity are quite common at this stage of pregnancy. You are probably tired with all the exertion which is making you feel flushed. As your temperature is normal, it is unlikely to be of major concern.
I would advice you to have some rest and see how you feel. If you still feel unwell after that, do go to the ER, to make sure that all is well.