How Does Taking Several Tablets During Pregnancy Affect The Baby?

Hi, I am in my 30th week of pregnancy. I had been diagnosed with low Hb around my 28 weeks of pregnancy and so asked to increase the dose of Orofer tablets from once to twice a day and along with it Zevit tablet once in the morning. I am using Calcium tablets already everyday afternoon and night. My recent scan report (at 28th week) showed symptoms that I might end up with High BP and as a precaution my doctor prescribed Ecosprin 75 mg to be taken once in a day for 6 weeks. I started this when I was 28 weeks pregnant. From past 2 weeks, I am noticing fluid leaks along with vaginal dischanrge. I discussed with my doctor. She said all my fluid levels are fine according to my last scan and the baby position is also fine. But she gave me 2 shots of Betnesal 12 mg (3 amp) with a gap of 24 hours in between saying this will accelerate the growth of lungs just in case there is a pre-mature birth. I also had sever pain in uterus in my 26th week, though nothing is abnormal in my reports, she had this in mind too. She added 2 more tablets to my list. Erythromycin(as I am allergic to Pencillin), to prevent any infections and Rantac to stop acidity that may be caused by Erythromycin. So my tablet consumption per day has risen to 11 per day. Morning - Rantac(before food), Orofer, Zevit, Erythromycin (after food) Afternoon - Erythromycin (after food), Ecosprin 75, Shelcal Night - Rantac(before food), Orofer, Shelcal, Erythromycin (after food) I am just wondering if this is usual for a 30 week pregnant to consume so many tablets per day. Is there going to be any side effect because of these tablets. Please help! Regards, Bindu