Hi I am wondering whether it is worth doing a test or whether I should wait a couple of weeks. I had unprotected sex a day or two before my period was due. My period came but a lot lighter than normal and lasted 2 days rather than 7. I want to do a test but dont know whether I should wait. I've also been experiencing back pain different to normal and a weird discomfort in my abdomen, but maybe I'm paranoid. Weve literally only just started trying, so I'd be surprised if I was, but my instinct is saying I am.