Is it normal to feel the baby a lot some days and not at all the next ?

Tania
Hey I'm 21 weeks now and I have a vaginal infection :/ I've been getting those a lot the doctors says its normal. I've been leaking something I keep saying to myself Is just the heat and I'm sweating its been 80 degrees here !! But when I started to feel the baby during my 19 week I felt him a lot and almost all day !! And this days I bearly feel him at all. I have my doctor appointment until the 12 ! And my husband keep saying its normal and I'm just paranoid !! Help