Thanks for your query,
Due to harmonal effects there is increased tendency of acidity and reflux. Pregnancy
increases the tendency of reflux by relaxing the lower Esophageal sphincter and increasing the intra abdominal pressure. In your case , the problem has increased. The symptoms usually subsides by 12 weeks but some times may persist to some extent.
I will advice you to take less spicy food, tea, and coffee in your diet. It will help you apart from the medications.
Best of luck and take care..