My baby is only 4 weeks old so I don't expect him to be sleeping for long stretches but over the past few nights his flinching and flailing have meant that every time i think he is asleep and put him in his Moses basket after a night feed, he starts flinching and thrashing his arms and legs. He grunts and moans and basically wakes himself up. He's breastfed and has been feeding for very short periods through the night. We have always swaddled him under his arms as he usually sleeps with them above his head. Last night i tried a full swaddle and he screamed blue murder. he tends to sleep well in the day but night time is turning into a nightmare. We are new to this and I'm wondering if there is something wrong. Please help! Any advice is appreciated.