Weight gain

I'm 31 weeks and so far have gained 45 lbs 😂 I've had a terrible pregnancy where all I have done is throw up since day one. Carbs have been about the only thing that makes me feel better. I have 9 more weeks to go and I'm afraid I'll gain 20 more lbs. I exercise daily, still lift (light weights) and do the stair climber, incline treadmill but feel like there's more I should be doing. How much have you all gained? Let me also add that I'm on a shot daily of lovonox that is a blood thinner due to a blood condition I have.Â