You are pregnant so whatever advice you will receive online has the potential to do harm, so don't do anything drastic.
It is good that you are very active and able to remain so during pregnancy, but you might be overdoing it.
What do you do in the gym? A circuit, one muscle group at a time, a class, cardio, ....? What do you eat normally? and what are your cravings?
Why not take these two months left and try to start having a healthy lifestyle. Ditch the crisps, cookies, etc... from the pantry, Start buying more vegetables and fresh products. I am not telling you to diet, I am telling you to cut the crap from the house, including the take away menus. You will soon have a child, you are doing a favour to all the family. Go to any library and in the cooking book section, there are tons of healthy eating books. Add to the piles a couple of vegetarian and vegan cookbook so you get inspiration for a couple of yummy side dishes.
At the gym, reduce the cardio if you are doing any and focus on one muscle group per day. So
Monday biceps and triceps
Tuesday quadriceps and calves
Wednesday Shoulders and chest
Thursday Core (adapted and safe for pregnancy)
Friday Glutes and harmstrings
20 min top each day. and even better only work out every other day. Rest is so important . All the upper body exercises can be done seated and you should do so.
Then you can add a nice walk.
If you can't control your eating it is your body shouting STOP. Reset the clocks. Respect your pregnancy and nourish it.