spraying house down with bug poison while pregnant?

So, my husband and I live near the mountains. Our backyard view is beautiful mountains! The down side is... as soon as spring comes it is a bug fest at home! 😫 what terrifies me are the 🕷 spiders! Just yesterday I killed 2 black widows Inside my house and 1 brown spider that I caught running up my sweater sleeve and the other one was this weird one that had an orange cross on its butt which was in our bathroom 😖 not only am I terrified of spiders but I'm also extremely worried about getting bit by a poisonous spider while pregnant. My husband went to Home Depot and bought one of those gallon sprays that come with a gun so that he could spray the house down over the weekend. Today again I saw a black widow running from my kitchen mirror! (This is aside from all the creepy bugs that chill on our deck and front door example: 5 inch long black looking bettle!?) so I had enough! I put a mask on and sprayed the house down inside and out and now I'm worried that perhaps I shouldn't have done that. I just either took the risk of using the poison around the house or took the risk of getting bit by a venemous spider. Any one ever done this and have had no problem?