Welcome to HCM,
Please do not worry and take care of yourself, as you have been prescribed treatment to help to sustain your pregnancy
hormone which is helpful.
is also very useful as it is very well known to prevent brain defects in foetus.
In history such as yours low dose of aspirin
is given as prophylaxis.
Please relax yourself and take care of your nutrition and your medical check ups,regular ante natal check up is very important for successful outcome.
I wish you safe mother hood.