Missed my period for almost 10 days. my pregnancy test showed a very clear line and one blur line. what does it mean?

Have other test: If pregnancy test " unclear" or 2 nd line blurred - it may be negative - depends on accuracy of test. If you want to be sure - it may be better either repeat test few days later or have a blood test hCG- more accurate than urine. If you not planing pregnancy in general - consult w doc. for more reliable methods of contraception. Do not forget prevention of STD ! Always use protection - Condom