I am 12 weeks and I have been having cramps and lower back pain for 3 days and also a clear water like discharge is this normal?

No. You have symptoms which could be serious and should see your physician. He/she will listen to you, do a physical examinarion, run some tests, and let you know what's going on.

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Last week I had a clump of clear discharge come out went to dr cervix is closed. Was having cramps and lower back pain but no uti. Now the pains worse?

Discharge. Since your pregnant, and the discharge is clear it may be normal. But i don't like the back pain issue. You need an u/a, and then an ultrasound since your pregnant, not xrays, ct scans since you are pregnant. Also a culture of the discharged may help. Read more...