On multiple medications/ vitamins? Someone ease my mind

So I have to take my prenatel, vitamin b6 25mg 3× daily (along with Unisom) for morning sickness, and also have to take zantac 150 mg twice daily. I feel like I am on all kids of drugs and really don't want to harm my baby. I hope this post does not sound silly. I am 8 weeks today and just beating myself up for having to take this. My insurance doesn't cover diclegis which is what I was originally perscribed so my doc suggested B6 but now I feel like I'm just on all kinds of meds. Positive stories are well appreciated thank you! My heartburn and nausea have caused me to not be able to stomach much of anything.