Baby hiccups at 33 weeks

Can someone share with me when we should worry about baby hiccups? I get it frequently since 32 weeks pregnant, almost each time i lie down or sit on the floor. 😖 Also, any tips on relieving heartburns? I get medication for it for acid indigestion - it helps alot but it means if it runs out, ill need to go clinic to get it again. My heartburn dont seem to go away for a second at all during this 3rd tri. Wanna ask my gynae but my scheduled appt is not until 3 weeks from now. Please help