I think I might be pregnant. The day before my period app predicted my fertile window I had unprotected sex using the withdrawal method. Though I wasn’t sure my partner fully withdrew himself. My period came a day late and has been light compared to my usual heavy flow. I’m on day two of my cycle and I have been extremely nauseous for about 5 days now and I feel like the nausea is worsening. However I am bleeding and it is mostly on time for my period. So my question is do you think I could be pregnant ( is it worth testing ), and if so should I be worried about the bleeding?