How do I fix my horny problem

I'm 22 and my husband is 27 we used to have amazing sex nearly everyday but since having a baby 6 months ago  we have had sex probably 5 times a month which is WAY NOT ENOUGH FOR ME.. I don't need to have sex every single day but I get so horny to the point where after I've tried everything to get him to make love to me.. I get so emotionally hurt and can't sleep.. How do I fix this!? Does anyone else have the same problem!?  I just want a really good deep hard fuck at least twice a week! When we do have sex.. Because I've been waiting so long I want it to be decent! But he ends up just going for about 7 mins.. And then I'm upset because I'm not satisfied.. We don't have enough money for a vibrator and other penis shaped object don't cut it! I want his cock inside me.. Not my fingers!!! What's wrong with me!?