Hi there. Your problem does not appear to be serious at all. If it is not symptomatic, leave it alone for the time being. You may show it or discuss with your gynec at your next appointment. There are many small glands in that area & vasculature & any of these may have got inflamed & or cystic or a tiny
hematoma (blood clot) may have developed. If there are no symptoms, relax, it may have been friction induced too. It is not an impediment to get pregnant & wish you & your husband all the best on this quest. Cheers & Good luck