Noticed my weights for lifting are much tougher and I am having to drop weight as my actual body weight dropped below 150. Anything to be concerned about or just standard? Weights are in yesterday's OYS.

I may just be tapped out with my workout program (simple 4x10) . Calories may be too low (1400-1500). Carbs maybe too low ? (25% of diet, 55 protein).

I know some muscle loss is expected.

Edit: thanks to all of you for the help!

My new plan is to go with the Mathews Bigger Leaner Stronger 3day lift plan, with 2100 calories on lift days and 1400 on rest days. Will try for 8 weeks and post results in OYS.