Rapid weight gain, freaking out

The last 3 weeks I have gained weight. I can handle a little weight gain, but the rate is TERRIFYING. Like overnight the last two mornings the scale has gone up the amount that is the most someone should lose per week. And my entire weight loss from the month before, which was from the scale finally moving at an encouraging rate after months of stall, is almost completely gone in two weeks.

I'm on 9.5 tirzepatide, but this weeks shot (only 3 days ago) was only a half dose and I'm waiting to have the money to order my meds. Should be able to on Tuesday.

I'm honestly so shaken and scared. How far is this going to go? And also, this feels so incredibly fragile! I'm so scared. I was so uncomfortable and miserable with my weight before. I'm so scared it's all about to rapidly be erased. Plus the humiliation of regaining it it keeps going.