sick 7 month old will only sleep when held

is this normal? he recently got sick and the last few nights it is IMPOSSIBLE for me to put him in his crib at night or even beside me in my bed. he has to be laying on me or on my side with my arm around him.

please tell me this is because he’s sick?! i’m a single mom. i’ve gotten hardly any sleep and have a terrible migraine. idk how much longer i can take this.