As such  I don't think u need blood transfusion.....at 29 ur blood levels can be increase by IV iron sucrose....

during delivery you'll have some blood loss which will further affect your hb and cause fatigue breathlessness and sometimes preterm and low birth weight baby. since you are 29 weeks pregnant you have few more weeks.inj iron sucrose is the other option available,if you are allergic to inj iron sucrose then blood tranfusion is the only way.

Injection iron sucrose Investigations to find out the reason of low hb

At 29 weeks with Hb 8.2 gm % there is no need for blood transfusion.  Time is on your side.  There are better alternatives available.

Without blood transfusion u can be helped out

Blood transfusion not required. U can go for IV Iron therapy

Hi U cn take iv Iron , discuss with ur doctor

Since there still is time left in your delivery, you could go for injectable iron preparation rather than blood transfusions, discuss this with your gynaecologist.