Help?!?!

My daughter will be 6 months on the 25th and the past couple weeks she has not been sleeping well. At 3 months old she was sleeping through the night, in her crib. Now she will fall asleep around 9pm, we will lay her in her crib, she will wake up 5 min later screaming and this happens over and over again until around 1:30 2am. It’s causing my bf and I to fight because we’re both so exhausted and confused lol. Is this a leap? Please tell me things will get better! Yesterday she skipped an afternoon nap and was wake for 14 hours straight !!!!! And then she finally went to bed at 2 and woke up at 7:00am. 🤦🏼‍♀️🤦🏼‍♀️🤦🏼‍♀️🤦🏼‍♀️🤦🏼‍♀️🤦🏼‍♀️