Me and my partner had unprotected sex, 10days after I spotted exactley a week before my period was due, it was a brown and pinkish colour it went on for a day and a half then stopped. I was 3days late on my period then it came on the 4th day but it wasn't my usual period it was really light for 2days then the other two were a little heavier but not like my usual period. I've also had a little back ache and today I woke up and the muscle in the top of my bum is sore in both sides. If I am pregnant I have worked out I'll will be about 4 weeks please help.

Wait 2 weeks after the "light" period and do a pregnancy test with the first urine of the morning.
Yes you could be pregnant

Thanks for answering my question could that be why my bum muscles are sore?

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Originally Posted by caseybrown_05

Thanks for answering my question could that be why my bum muscles are sore?

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No, there's a different reason for that.