I'm 35, my last menstrual cycle was on May 4, 2019, and I usually have a 28-day cycle and my cycles are regular. I'm not on any type of birth control or medication. I had unprotected sex on May 26 and no sexual intercourse until June 30th. I still have not had a period yet but after intercourse on June 30, I started spotting that was watery and light pink a few hours after. My cervical mucus has been watery for the past few weeks. Pregnancy strips are negative and I have had some pregnancy symptoms for the past few weeks. I am having very light cramps in my lower pelvic area off and on. I took two Kroger pregnancy tests last night and they had very faint positive signs. What could this be and could I still be pregnant?