Postpartum Life of mine

So ive seen many successful happy postpartum mommys, Congrats! Im 6 months PP and I'm happy to have my baby boy, he's a big boy, tall n chunky lol. I've been having issues with myself though, I've gained soooo much weight after giving birth. Through my whole pregnancy i had nausea throughout the day, vomiting and barely keeping food down, i was losing weight until my belly started growing then my weight stayed in the same spot. I was 8 months and couldnt eat anything i was miserable so once i had the baby i felt so much relief, I could eat again, so i ate and ate and ateeeeee 😟 around 2 months PP I put on 20 lbs fast. Im 50 lbs more now. Im under the obese line which is great but ive still never been this much over weight. Im trying to lose it but its sooo hard with cravings to sweets, no motivation to workout, i feel too heavy to run and do push ups, I try a healthy diet but i crave so bad and fall into bad habits again. Im partially breastfeeding but thats not helping because im having issues with lactating. my baby ate so much that i had to give him formula at 2 months because i couldnt make enough milk. i thought eating alot of food would help my body make more but it didnt. Im taking supplements and pills with herbs which wont help unless i remember to pump and drink water every few hours.. Tell me your stories, how are you dealing with weight, breastfeeding, mood, period, birth control?