I feel you on this im 29. I started running in april about 3 miles 4 days a week and haven't lost. Went to doctor and was told thyroid is ok.high cholesterol and low vitamin d and b12. I started eating a better breakfast everyday instead of just coffee. Im 5 wks 4 days today. Im afraid to do my ab routine. Im trying to stay as active as I was prior to finding out
I just buy fresh fruits when im out working and snack on that.
Eat six small meals a day instead of three large meals, ab workouts are fine as long as you're off your back (planks, leg lifts are good), up your protein, eat healthy carbs (whole grains, high fiber). Tons of veggies & some fruit. Walking, swimming, calisthenics, are all good exercise options.
Women (depending on height) should eat 1900 - 2500 calories a day. During 1st trimester add 200, during third trimester add 300. I'm 6ft, 175 lbs & I eat 2200 calories a day, so while pregnant I try to eat 2400.. it doesn't happen every day but that's okay so long as I'm eating healthy things, nutrients the baby needs. 75-100g of protein a day, folic acid, calcium, etc. I lost 3 lbs my first trimester & baby is big - growing ahead of schedule. Now that I'm in my second I'm trying to gain steadily as recommended. You'll be okay if you just live a healthy lifestyle!