DW and I have been together for 5 years, married for 3. We have a 3 month old baby. We have had sex twice since we got married. I am still as much in love with her as I ever have been. Even more so since she gave birth but the feeling doesn't seem to be reciprocated. 
She says she loves me but barely even touches me any more. The closest I get to a kiss is a quick peck when I leave for work and just before bed. No snogging! I hate that word but it's the one that fits. I miss it. No hugs unless I instigate it. If I say to her that she never hugs or kisses any more she just replies with well come and give me one then. I'm sick of begging for affection. I just want to feel wanted. 
I could put up with no sex (for a while) if only there was SOME sort of affection but I get nothing. 
How do I fix this?
She is currently upstairs and I am crying on the sofa typing this after we had a stupid argument over nothing at 6pm and haven't spoken since. The baby will wake soon to be fed so I need to go up with his bottle soon.