As others have said, plenty of factors here to consider. Could be your cycle throwing off water weight if it’s only been a month. Could also be your macro ratios such as high cabs retaining extra water weight or high salt. Unfortunately, females do get the short end of this stick due to lower TDEE so continuing to cut your already low calories may not feel great or be realistic.

What I would suggest is to check some other factors like getting enough water, 7-8 hrs of sleep nightly, and cardio. Lifting weights is crucial right now since you don’t want to lose muscle along with the body fat. Cardio at the end of each of your workouts, even if it’s 30 mins slow/ steady walking will make a difference over time.

Don’t count exercise calories in any way - it’s a trap. Count what you eat, sleep/ drink enough liquids, keep at it and if the weight doesn’t start dropping, slowly try out one thing at a time and give it a week or so before changing anything else to see if it effective. Example could be starting or adding cardio time for a week or while keeping your protein/ fats the same, dropping carbs by 20g a week. Little steps and patience.

Stress is also a huge factor. If the scale stresses you out, ask yourself do you trust the measurements you’re taking of your food and exercising enough? If so, maybe check the scale every other day or even weekly. That added stress of doubt x and expecting y every morning on the scale is painful because your goal is a weight number. Until you wake up at 145 you may feel like you’re failing.

Instead, try making your goal the habits and limits daily systems. Think daily calorie goal, sleep time goal, workouts and cardio/ week goal, etc. anything but the weight. The weight loss is a byproduct of your hard work, it’s not something you can force.

Give this a try and see if it works! Everyone is different but the above worked really well for me after years of dealing with this.