Not at all unreasonable. I was certain I was going to have to run away and leave DD at about the age yours is now. I found her unutterably hard work - she not only screamed in rage almost every afternoon/evening for about eight - ten hours, she would take longer to go down for a nap than she actually slept for. I did not 'enjoy' her at all. I'm not entirely sure I loved her that much, as awful as that sounds.
She, however, had the opposite problem in some ways, that she really didnt want to be held. In fact, it made her worse, so we'd have to put her down and then listen helplessly.
At fourteen weeks, she started uncurling, holding her head up properly, and just stopped. I mean, she still cried, but it was crying, and it was for stuff, not just for the sake of screaming.
Now she's 16 months, and frankly, a delight. I know that seems endlessly far off, but I swear, stop thinking about how long you've listened to screams today, stop thinking about the passage of time, and suddenly you'll be out of the woods.
Stuff that helped: driving a LOT. Made her sleep, and gave me a break of sorts.
Hoover - standing practically on top of it, so it was really loud, she'd suddenly 'wake up' from the rage and calm down.
Going out - seeing others seemed to defuse the awfulness.
Infacol (bottles and bottles) - not sure it eased any pain/symptoms, but it gave me a feeling of control back, albeit a small one.
Ewan the Dream sheep - but on loudest setting, and only one of the noises worked for DD.
Cot - she hated the Moses/sidealong crib. We moved her into her own room at 12 weeks, straight into cot, and she was easier there. Slept better, longer and more deeply.
Swimming lessons - again, for a break, and to feel I was doing something, but I also think it tired her out, and the water seemed to calm her for whatever reason. We started at 7 weeks.