Pregnant? UPDATE

My last period was the 14th of July, I'm apparently late according to this app. Me and my husband haven't actively been trying but we aren't preventing either. When would you take a pregnancy test? I'm getting all the symptoms of a period just accompanied by nausea.. I'm still waiting for my period to start because I don't want to get my hopes up and then see a negative test and had wasted that test. I've been so tired lately. We got married on Friday and have had celebratory drinks on the weekend so I'm panicking also that what if I harmed any baby that had implanted. Advice please x

Have got two other kids of my own but I can't completely remember when I tested with them. Thanks in advance.

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It's positive ❣️