In this sexy iPhone app, iKamasutra Lite brings the famed Kama Sutra sex positions in your iPhone. Designed to add spice to the romance together with your significant other, iKamasutra Lite allows you to browse positions to test. The app may even monitor positions you've already tried, keep your favorites and allow you to make a "to do" list. Looking for new things to use, but can't pick? You can shake the phone to get a random position. A progesterone blood test is performed to discover how much of the progesterone hormone is in a sample of blood. This female hormone is produced whenever a mature egg is released from an ovary after a process generally known as ovulation. This hormone helps you to prepare the endometrium (uterine lining) to just accept the egg if sperm fertilizes it. If the egg goes without having to be fertilized, menstrual bleeding occurs and progesterone levels drop. Try the above and you maybe glad you did, as you will feel better, have a higher sex drive as well. Tubal blockage is among the serious diseases after infection, which most often because of infection including pelvic inflammatory disease. Pelvic inflammatory disease is among the most common cause of blocked fallopian tubes. Current or reputation an STD infection, specifically chlamydia or gonorrhea would also make the tubal blockage. The rate of tubal infertility has become stated to be 12% after one, 23% after two, and 53% after three instances of pelvic inflammatory disease. Even if PID is not really present, a good reputation for PID or pelvic infection raises the likelihood of blocked tubes. Blocked fallopian tubes can't permit the ovum along with the sperm converge, thus making fertilization impossible. Sunglasses allow better vision in bright daylight, and may protect one's eyes against damage from high levels of ultraviolet light. Typical sunglasses are darkened for protection against bright light or glare; some specialized glasses are clear in dark or indoor conditions, but turn into sunglasses when in bright light. Most sunglasses do not have corrective power in the lenses; however, special prescription sunglasses can be ordered. Specialized glasses may be used for viewing specific visual information (such as stereoscopy) or 3D glasses for viewing three-dimensional movies. Sometimes glasses with no corrective power in the lenses are worn simply for aesthetic or fashion purposes. Even with glasses used for vision correction, a wide range of designs are available for fashion purposes, using plastic, wire, and other materials. The manifestation of love that was deemed to be exclusive between men and women is now exercised by even the same sexes together.