Hey ladies. I have a question I'm wondering if I'm the only one that's going through this right now.…

Hey ladies. I have a question I'm wondering if I'm the only one that's going through this right now. I had knee surgery on the 16th of last month I was told to take my birth control out which is the NuvaRing because it could increase the chances of blood clots so I was told to leave it out for a month I came on my cycle on the 20th and got off on the 26th..the day after me and my fiance started having sex the week after I came off my. I started getting the crampy feeling under my stomach which I assume that I was ovulating so I'm like okay sometime I have Painful ovulation I don't know if it's because of the birth control that I'm going or not, fast forward to July 10th I had sex that night woke up in the morning and seen pink my stomach was cramping and I was like I'm about to get my period again so I didn't think too much of it putting a tampon took my daughter to school was gone for no more than an hour came back use the bathroom nothing was on the tampon but my stomach was hurting cramping underneath my stomach the whole week.. now fast forward until couple of hours ago I had sex and after we finish the pink was back I put a tampon in I just took it out nothing's on the tampon but underneath my stomach is cramping I feel like I'm coming on my period can somebody please tell me what they think maybe going on I have an appointment with the ob in the morning but I'm so scared right now that I can't sleep and I don't know what to do or who to call please help..P.S. I've looked it up on Google and I have self diagnose myself which has scared the crap out of me I just want to know if it's any ladies that has experienced this is something wrong is it something to be worried about??