I felt the same way, my Lo had colic and cried continuously all the time he was awake until he was 3 months old, it was hell all I could do was feed him to keep him from crying, I let him sleep on me rather than risk waking him up and start crying again, I spent entire days trapped in a chair with him sleeping and feeding, I'd have to wait until hubby got home from work to be able to get a drink and go to the loo!! Needless to say I did ALOT of crying myself (nonstop baby crying will drive you insane!) and felt like I couldn't do it, I'd dread waking up, each day felt like an uphill struggle that I barely got through, I love my baby but he felt like far more work than I was prepared for.
I started giving him to my mum or mil for an hour 1 day a week so I could have a bath or just sit and watch tv or knit or sleep, anything that didn't involve a baby, those breaks definately saved my sanity and kept me going through those early weeks! When he hit 6 weeks I was much better at coping with the colic & his crying and it just got easier and easier, I think it just took a while to adjust to being a mum but now I'm loving every moment!
Stick with it hon your doing great, it can be the hardest job in the world but after 3 months you are rewarded with better nights sleep, laughing, smiling, goo's & gaa's, basically a beautiful little human you can interact with, who knows you and shows it, and who learns something new everyday. Mine has not been affected by being allowed to sleep on me during the day, he goes to bed fine in an evening now, it didn't ruin him at all.
Never underestimate the benefit of getting someone to give you a break or talking to someone about how you feel, your not alone in finding it hard but it does get better and we are here for you until it does xxx