Hi,
Welcome to icliniq.com.
I read your query and understand your concern.
There could be two reasons for the pain,
1. Pelvic Inflammatory disease (PID) - vaginal infection is transmitted during sex, so both have to be treated at a time or else you will get infected next time of sex. You may have white or yellow or grayish discharge with or without itching, foul smell, pain at the beginning due to dryness (as the lubrication will be reduced), and late towards the end when a fully erect penis touches the innermost vagina (due to an inflammation of the structures around the uterus) pain radiating to the back and thighs.
Also, the infection ascends up from the vagina, travels through the tubes, and settles around the uterus and muscles around the uterus. Any attempt at sex can pull these inflamed muscles and ligaments causing pain.
Before treatment confirm that you are not pregnant. I suggest the following medications for you and your partner.
1. Tablet Fluconazole 150 milligrams stat (only 1 tablet, no repetition) after lunch.
2. Tablet Azithromycin 1 gram stat (only 1 tablet, no repetition) one hour before food.
3. Tablet Secnidazole forte 2 tablets stat (no repetition) after dinner.
All the above should be taken on the same day by both of you.
After that, I suggest the following,
1. Capsule Doxycycline 100 milligrams twice a day for one week.
2. Use vaginal wash twice a day followed by vaginal pessary.
3. Capsule Clingen forte (Clindamycin, Clotrimazole, and Tinidazole)or Candid CL (Clindamycin and Clotrimazole) or Cansoft CL(Clindamycin and Clotrimazole) once at night for five nights.
4. Your partner can have a local application of any antibiotic and antifungal cream.
5. Candid B (Clotrimazole and Beclometasone) or Candiderma (Clotrimazole, Gentamicin, Beclometasone) or Lobate GM (Clobetasol, Miconazole, Neomycin) on the penis twice a day after bath for seven days.
6. Do not have sex till the infection is fully gone.
Do the mentioned treatment properly as delay may send the infection inwards and may affect both your and your partner's future fertility. Consult with a specialist doctor and take the medicines with their consent.
2. Endometriosis - Every month when periods occur, little blood may enter the abdomen through the tubes, this blood can settle on the surrounding muscles and ligaments. After a few years these form adhesions, which are painful during periods and sex, when there is traction on these adhesions.
This pain can be reduced by painkillers, reducing periods by cyclical hormones, or by getting pregnant. You can have an internal examination by a gynecologist to know if any such problems and get scanning done to know if there are any significant adhesions or cysts.
I hope I have clarified your query, do write back if there are any more queries.
Thank you.