Heat Rash On a Newborn?

Well when my daughter was born she had an odd rash the drs said was normal, but theywere like white bumps sorta and red aroudn them. Today she has red bumps on her face and when I was feeding her , I had my hand on her back , she just had a diaper on at the time and I noticed when I moved my hand she had a rash there too, it is kinda hot in certain parts of our house , our heaters are weird. Imthinking heat rash>? And if so is there anything ucan put on it? So far it is still thereon that one side of her face and back just alittle area on her back like the size of a half dollar. Just like red bumps and alil red around the bumps as well, it doesnt look like baby acne I dont think so im not sure. This week I have to schedule her 2 wk checkup after I put he ron our insurance temporarily until we get the birth certificate. So eh it might be this week or next when she has her checkup. Just wondering if I can use like a and d ointment or baby vaseline or something on it?