third child regrets

I don't know if I'm scared or what. my husband and I have two LOs and left the idea of having a third up in the air for the next year (once I'm 35, I was going to be done.) I found out I was pregnant after being sick for 2 weeks and realizing it felt more like morning (all day) sickness and not the flu. see I had what I thought was my period just before the sickness began. (It was 6 days of medium amount bleeding!) I'm 8 weeks now and barely staying out of the hospital with this HG. I can't care for myself or my family right now. I'm having all kinds of regrets about having a third child. I'm mostly just whining at this point, but I hope these feelings go away soon.