Cramping in your thighs isn't rare after a positive­ pregnancy test, notably near your e­xpected menstrual cycle­. Such discomfort arises from bodily transformations during early pregnancy stage­s. Potential reasons include hormonal fluctuations, e­nhanced blood circulation, or the uterus expanding. To find re­lief, consider mild stretching e­xercises, applying warmth pads, and ele­vating your legs while reclining.

If your period is overdue by nearly 40 days, it's important to consider the possibility of pregnancy if you're sexually active. Take a home pregnancy test to confirm pregnancy. If pregnancy is not the cause, other factors like stress, changes in diet or exercise, hormonal imbalances, or underlying medical conditions may be contributing to the delay. 

See a gynecologist for an examination and diagnosis. Sores and lumps in the vaginal area could be caused by STIs, vaginal infections, cysts,etc. Only a doctor can diagnose the cause and provide appropriate treatment. It's essential not to delay medical attention for vaginal concerns to avoid further complications.

It is quite normal to have a slip in the monthly cycle even if you didn’t get involved in any sexual activity. Stress, drastic weight changes, or changes in your daily schedule can affect your period. If the missed period is the only symptom you are experiencing, everything is probably okay. Your periods should return in a few weeks without any intervention. You need to take it easy and eat a balanced diet; also do some physical exercises and ensure to get enough sleep.