My 5 month old is always fussy, never content?

I'm wondering if anyone had a similar situation and what you did to help. My daughter is 5 and a half months old. She's never been content since birth! She fights sleep vigoursly. She sleeps about 5 hours a night getting up once or twice in between and she only sleeps about 3 hours during total during the day. She hates the car. She hates the stroller. She will only go in her swing for a small amount of time in the morning. She's ok with the exersaucer or jumperoo for only 5-10 minutes. She doesn't like to leave the house. I can't "let her cry" because she's stopped breathing twice and we had to administer CPR. She only takes her bottle when she's ready to sleep and I have to carry her around in the bathroom with the fan on... and she's getting heavy! She's been on cereal and vegetables for about 4 weeks but very minimal because she hates that too! She's not teething yet but we've tried hurricane gel and tylonel anyways. We've tried colic calm, gripe water, sleep tonic, music and the carriers which she also doesn't like. She was on prevacid and zantac for silent reflux but that never helped and seemed to go away. I'm desperate. I keep trying and trying and she continually dislikes everything and I'm exhausted. Doctor said she's fine just a high sensory baby? It would be nice if she at least liked ONE thing to help us through the day. Has anyone dealt with something similar? Thank you :)