period a week late, negative tests, on the pill, help!

I’m on the pill, and I’m on my off week right now as of sunday. I normally get my period like clockwork, usually it starts either the day after I start the off week or a day after that. this month, I have yet to get a period and I’m supposed to start the pill back up tomorrow. I took a test a few days ago that turned up negative, and I took another one today that was also negative. I’m planning on waiting a couple days and testing again, but should I start my pill up tomorrow? or wait? I don’t wanna find out I’m pregnant and have taken the pill, possibly hurting the baby if there is one. help!