Working hard and gaining weight??

[njaw]

For the last 2 weeks I've been watching my calorie intake like a hawk. Not been over 1300 calories once. MFPing everything and weighing to make sure my portion control isn't haywire. Been in the gym 6 days a week, sometimes before work and then swimming in the evenings once the kids are in bed. Gym is Les mills classes and two sessions a week with my PT who I do weights with. Started at 73.5kg and somehow am now 74.4kg.

I can't even blame it on anything hormonal as that's not an issue for another 10 days.
V.v.v. Confused and a little demoralised! Can anyone shine light on what's going wrong?

Could you be gaining muscle? Its heavier than fat, so although you might be getting smaller inches-wise, you would weigh heavier.

I'm due in about 14 days and have a spurt of weight gain from ovulation that will go again then come back a few days before my period, could it be that?

Pregnant?