I've been having lower back pain stomach cramps clear discharge headaches & pain in the tops of my legs could I be pregnant even if I didn't miss my period?

Nl period no Preg. The most important question to answer for you peace1994 is if you could be pregnant even though you had a cycle. If you period was normal (time, length, bleeding) you are not pregnant. A period happens when the hormonal changes caused by a fertilized egg does not occur. Your other symptoms are broad enough that an in-person evaluation with a competent doctor is needed. Be well.