Weight gain?

I'm really about to cry I feel like I've gained so much weight...I've only gained 4.6 pounds from my prepregnancy weight. but I lost 21 pounds in my pregnancy so I've gained that whole 21 pounds back plus the 4.6 pounds. every week I weight myself it says I go up like 5 pounds..and I have 9 weeks left...if I seriously gain 5 pounds every week I'm gonna go up another 45 pounds...but the baby is only gaining a half a pound every week. how could I be gaining so much? I feel like I barley eat. maybe it's because when I do its stuff I crave..idk...idk don't eat alot..idk just can't stop thinking about how badly I just want to start loosing weight...I feel so big...my pre-pregnancy "fat clothes" are even feeling tight...I'm just so upset because I have 9 whole weeks to go...that's a lot of time to put on tons more weight..I feel so self conscious. ..